Author: Ameeba

  • CVE-2013-3307: Command Injection Vulnerability in Linksys Routers

    Overview

    The Common Vulnerability and Exposure (CVE) identifier CVE-2013-3307 refers to a critical security flaw found in certain versions of Linksys routers. This vulnerability affects E1000 devices through version 2.1.02, E1200 devices before version 2.0.05, and E3200 devices through version 1.0.04. This security issue allows attackers to inject operating system commands via shell metacharacters in the apply.cgi ping_ip parameter on TCP port 52000. The severity of this vulnerability is underscored by its potential to lead to a full system compromise or data leakage.

    Vulnerability Summary

    CVE ID: CVE-2013-3307
    Severity: High (8.3 CVSS score)
    Attack Vector: Network
    Privileges Required: None
    User Interaction: None
    Impact: System compromise, data leakage

    Affected Products

    Product | Affected Versions

    Linksys E1000 | Versions up to 2.1.02
    Linksys E1200 | Versions before 2.0.05
    Linksys E3200 | Versions up to 1.0.04

    How the Exploit Works

    The exploit takes advantage of a security oversight in the web interface of the affected Linksys routers. More specifically, it exploits the routers’ lack of proper input sanitization in the apply.cgi ping_ip parameter, which allows for the injection of shell metacharacters. An attacker can use these metacharacters to inject and execute arbitrary OS commands. The attack can be initiated remotely over the network without requiring any privileges or user interaction, making this a particularly dangerous vulnerability.

    Conceptual Example Code

    The following is a conceptual example of a malicious HTTP request exploiting this vulnerability:

    POST /apply.cgi HTTP/1.1
Host: <Router IP>:52000
Content-Type: application/x-www-form-urlencoded
ping_ip=;cat /etc/passwd;

    In this example, the attacker sends a POST request to the apply.cgi endpoint on the router’s web interface. The “ping_ip” parameter is set to a command that, when executed, will return the contents of the /etc/passwd file, potentially revealing sensitive system information. Note that this is a simplified example, the actual attack may involve more complex commands and require further knowledge of the target system.

  • CVE-2025-6996: Decrypting User Passwords in Ivanti Endpoint Manager due to Improper Encryption Usage

    Overview

    The CVE-2025-6996 vulnerability refers to the improper use of encryption in the agent of Ivanti Endpoint Manager, a common IT asset management solution. This flaw, present in versions prior to 2024 SU3 and 2022 SU8 Security Update 1, can be exploited by a local authenticated attacker to decrypt other users’ passwords. Given the widespread use of Ivanti Endpoint Manager in IT environments, this vulnerability could potentially impact a vast number of users and businesses. Its exploitation can lead to unauthorized access, potential system compromise, and data leakage, posing a significant threat to data privacy and security.

    Vulnerability Summary

    CVE ID: CVE-2025-6996
    Severity: High (8.4 CVSS Score)
    Attack Vector: Local
    Privileges Required: Low (Authenticated User)
    User Interaction: None
    Impact: Unauthorized access, potential system compromise, data leakage

    Affected Products

    Product | Affected Versions

    Ivanti Endpoint Manager | Before version 2024 SU3
    Ivanti Endpoint Manager | Before version 2022 SU8 Security Update 1

    How the Exploit Works

    An attacker with authenticated access to the local system can exploit this vulnerability by manipulating the improper encryption usage in the agent of Ivanti Endpoint Manager. Essentially, the flaw lies in the software’s failure to implement robust encryption for user passwords. This means that an attacker can potentially decrypt these passwords, gaining unauthorized access to other users’ accounts.

    Conceptual Example Code

    While the exact exploit code is not divulged for responsible disclosure, the general attack scenario would involve an attacker intercepting encrypted password data and then using the weakness in the encryption to decrypt the passwords. This can be conceptually illustrated in pseudocode as follows:

    def exploit_cve_2025_6996(target_system):
encrypted_passwords = intercept_encrypted_passwords(target_system)
decrypted_passwords = decrypt_passwords(encrypted_passwords)
return decrypted_passwords

    This pseudocode represents the high-level process an attacker might follow to exploit this vulnerability. It’s important to note that this is a conceptual example and the actual exploit would likely require more advanced techniques.

    How to Mitigate CVE-2025-6996

    The primary method of mitigation for this vulnerability is to apply the vendor-supplied patch. Ivanti has released updates (2024 SU3 and 2022 SU8 Security Update 1) that rectify this encryption flaw, and users are strongly advised to apply these patches as soon as possible.
    As a temporary mitigation, users can also deploy a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to monitor and potentially block suspicious activities. However, these are not long-term solutions and cannot replace the need for patching the software.
    Remember, staying up-to-date with software updates and patches is one of the most effective ways to secure your systems against vulnerabilities like CVE-2025-6996.

  • CVE-2025-6995: Local Authenticated Attacker Can Decrypt User Passwords in Ivanti Endpoint Manager

    Overview

    CVE-2025-6995 is a serious security vulnerability discovered within the agent of Ivanti Endpoint Manager. This vulnerability is of particular concern to organizations utilizing Ivanti Endpoint Manager versions prior to 2024 SU3 and 2022 SU8 Security Update 1. The flaw opens the door for a local authenticated attacker to improperly use the encryption mechanism, thus decrypting other users’ passwords. This could potentially lead to system compromise or data leakage, jeopardizing the security of critical company data and systems.

    Vulnerability Summary

    CVE ID: CVE-2025-6995
    Severity: High (8.4 CVSS Score)
    Attack Vector: Local
    Privileges Required: Low
    User Interaction: None
    Impact: System compromise or data leakage

    Affected Products

    Product | Affected Versions

    Ivanti Endpoint Manager | before 2024 SU3 and 2022 SU8 Security Update 1

    How the Exploit Works

    The exploit takes advantage of an improper use of encryption within the agent of Ivanti Endpoint Manager. A local authenticated attacker can misuse this encryption mechanism to decrypt other users’ passwords. This could potentially provide the attacker with unauthorized access to sensitive data or systems, leading to serious consequences including data leakage and system compromise.

    Conceptual Example Code

    Although no specific exploit code is available, an attacker would typically initiate a request to the Ivanti Endpoint Manager agent after authenticating locally. The agent, due to the flaw in encryption usage, could then return decrypted passwords. A conceptual example may look something like this:

    $ curl -u attacker:password -X POST http://localhost:8080/Ivanti/Agent/decrypt

    This command represents a local authenticated attacker making a request to the vulnerable Ivanti Endpoint Manager agent endpoint that handles decryption.

    Mitigation Guidance

    The most effective mitigation strategy for this vulnerability is to apply the vendor’s provided patch. Ivanti has released updated versions of the Endpoint Manager software that address this vulnerability. Organizations should immediately upgrade to Ivanti Endpoint Manager version 2024 SU3 or 2022 SU8 Security Update 1 or later.
    In cases where immediate patching is not feasible, a temporary mitigation can be achieved by using a Web Application Firewall (WAF) or Intrusion Detection System (IDS). These systems can monitor and block potentially malicious activity, providing some level of protection against this exploit.
    However, it’s important to remember that these are temporary solutions and may not completely protect against all potential exploits of this vulnerability. The best course of action is to patch the affected software as soon as possible.

  • CVE-2025-46835: High-Risk Vulnerability in Git GUI Allows Unauthorized File Overwrite

    Overview

    In the dynamic world of cybersecurity, the discovery of a high-risk vulnerability in the popular source control management tool, Git GUI, raises serious concerns for users and administrators alike. This vulnerability, identified as CVE-2025-46835, poses a significant threat to any user who clones untrusted repositories and can lead to potential system compromise or data leakage.
    The vulnerability affects a wide range of users due to the widespread use of Git GUI in software development. Being a tool that allows developers to interact with Git via a Graphical User Interface, the implications of this vulnerability are far-reaching, affecting individual developers, large software development teams, and organizations that rely on Git for version control.

    Vulnerability Summary

    CVE ID: CVE-2025-46835
    Severity: High-Risk (CVSS: 8.5)
    Attack Vector: Network
    Privileges Required: None
    User Interaction: Required
    Impact: System Compromise, Data Leakage

    Affected Products

    Product | Affected Versions

    Git GUI | Prior to 2.43.7, 2.44.4, 2.45.4, 2.46.4, 2.47.3, 2.48.2, 2.49.1, 2.50.1

    How the Exploit Works

    The vulnerability lies within the functionality of Git GUI that allows users to edit files within the repository. When a user is tricked into cloning an untrusted repository and editing a file located in a maliciously named directory, Git GUI can create and overwrite files for which the user has write permission. By exploiting this vulnerability, an attacker can manipulate the file system on the user’s machine, potentially leading to system compromise or data leakage.

    Conceptual Example Code

    Here is a conceptual example of how the vulnerability might be exploited. An attacker could create a malicious repository with a specially crafted directory and file:

    mkdir ../../../tmp/exploit
echo "malicious code" > ../../../tmp/exploit/exploit.txt
git add .
git commit -m "CVE-2025-46835 exploit"

    An unsuspecting user could then clone this repository and be tricked into editing the `exploit.txt` file. Git GUI would then overwrite the file at `/tmp/exploit/exploit.txt` with the contents of the edited file.

    Mitigation

    To mitigate this vulnerability, users are strongly advised to update Git GUI to the latest patched versions: 2.43.7, 2.44.4, 2.45.4, 2.46.4, 2.47.3, 2.48.2, 2.49.1, or 2.50.1. If updating is not immediately possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. Additionally, users should be wary of cloning untrusted repositories and editing files within them.

  • CVE-2025-7586: Critical Tenda AC500 Vulnerability Leading to Stack-Based Buffer Overflow

    Overview

    CVE-2025-7586 is a worrying vulnerability identified in Tenda AC500 2.0.1.9(1307). This vulnerability, which has been classified as critical, is related to formSetAPCfg function of the file /goform/setWtpData. Its exploitation could lead to a stack-based buffer overflow, a common type of security issue that can have disastrous consequences. The vulnerability is of particular concern because it can be exploited remotely, and information regarding its exploitation has been made publicly available, increasing its potential impact.

    Vulnerability Summary

    CVE ID: CVE-2025-7586
    Severity: Critical, CVSS Severity Score: 8.8
    Attack Vector: Remote
    Privileges Required: None
    User Interaction: None
    Impact: Potential system compromise or data leakage

    Affected Products

    Product | Affected Versions

    Tenda AC500 | 2.0.1.9(1307)

    How the Exploit Works

    The exploit takes advantage of a flaw in the formSetAPCfg function of the file /goform/setWtpData. By manipulating the argument radio_2g_1, an attacker can trigger a stack-based buffer overflow. This type of overflow occurs when a program writes more data to a buffer located on the stack than what is actually allocated for that buffer. This overflow can overwrite other data on the stack, potentially leading to arbitrary code execution, alteration of the program’s flow, or even a system crash.

    Conceptual Example Code

    Here is a conceptual example of how the vulnerability could be exploited. This example uses a simple HTTP POST request to the vulnerable endpoint.

    POST /goform/setWtpData HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
radio_2g_1=AAAA...[LONG STRING]...

    In this example, the `radio_2g_1` parameter is filled with a long string of ‘A’s. If the vulnerability is present, this could trigger a stack-based buffer overflow.

    Recommendation

    Users are strongly recommended to apply the vendor’s patch to mitigate the vulnerability. As a temporary mitigation, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help detect and prevent exploitation attempts. However, these measures do not eliminate the vulnerability, and patching should be carried out as soon as possible.

  • CVE-2025-2521: Memory Buffer Vulnerability in Honeywell Experion PKS and OneWireless WDM

    Overview

    In the rapidly evolving field of cybersecurity, new vulnerabilities are continually being discovered and exploited. One recent vulnerability, identified as CVE-2025-2521, has been detected in Honeywell Experion PKS and OneWireless WDM. These systems are widely used in industrial control, exposing a broad range of industries to potential attacks. The vulnerability lies in an overread buffer in the Control Data Access (CDA) component, which could lead to remote code execution by a malicious actor.
    This vulnerability is particularly concerning due to its severe impact and the wide range of affected products. The potential for system compromise or data leakage is a significant threat to the security and integrity of operations in affected industries.

    Vulnerability Summary

    CVE ID: CVE-2025-2521
    Severity: High, CVSS Score 8.6
    Attack Vector: Network
    Privileges Required: None
    User Interaction: None
    Impact: Potential system compromise or data leakage

    Affected Products

    Product | Affected Versions

    Honeywell Experion PKS | 520.1 through 520.2 TCU9 and 530 through 530 TCU3
    OneWireless WDM | 322.1 through 322.4 and 330.1 through 330.3

    How the Exploit Works

    The vulnerability in question exists due to inadequate buffer size validation in the CDA component of the affected systems. An attacker could exploit this by sending specially crafted packets that would cause an overread of the buffer. This could potentially lead to remote code execution, allowing an attacker to execute arbitrary code on the affected system.

    Conceptual Example Code

    Here’s a conceptual example of how the vulnerability might be exploited. This is a pseudocode representation of a malicious packet that might trigger the buffer overread:

    # Malicious Payload
malicious_payload = {"buffer": "OVERFLOW"}
# Send the malicious payload
send_packet("target_ip_address", "target_port", malicious_payload)

    Please note that this is a simplified representation and actual exploit code would likely be more complex.

  • CVE-2025-46334: Critical Vulnerability in Git GUI Enables Potential System Compromise

    Overview

    The cybersecurity landscape is continuously evolving, with new vulnerabilities being discovered on a regular basis. One such vulnerability, identified as CVE-2025-46334, poses a significant risk to users of Git GUI, a popular interface for the Git source control management tools. This vulnerability allows a malicious repository to deliver harmful versions of sh.exe or typical textconv filter programs, such as astextplain, leading to potential system compromise or data leakage.
    This vulnerability essentially stems from the design of Tcl on Windows, where the search path for an executable always includes the current directory. This comes into action when the user selects Git Bash or Browse Files from the menu, consequently invoking the malicious programs. Given the widespread use of Git GUI, this vulnerability could have far-reaching implications if not addressed promptly.

    Vulnerability Summary

    CVE ID: CVE-2025-46334
    Severity: Critical (8.6 CVSS Score)
    Attack Vector: Remote
    Privileges Required: None
    User Interaction: Required
    Impact: Potential system compromise or data leakage

    Affected Products

    Product | Affected Versions

    Git GUI | Prior to 2.43.7, 2.44.4, 2.45.4, 2.46.4, 2.47.3, 2.48.2, 2.49.1, 2.50.1

    How the Exploit Works

    The exploit takes advantage of a design flaw in Tcl on Windows, which always includes the current directory in the search path when looking for an executable. A malicious repository can then ship harmful versions of sh.exe or typical textconv filter programs, such as astextplain. These programs are invoked when the user selects Git Bash or Browse Files from the menu.

    Conceptual Example Code

    While the exact exploit code may vary, a conceptual example might look something like this:

    # Creating a malicious repository
git init malicious_repo
cd malicious_repo
# Creating a malicious sh.exe
echo 'echo You have been pwned' > sh.exe
# Committing the malicious sh.exe to the repository
git add sh.exe
git commit -m "Add sh.exe"

    When a user clones this repository and opens it in Git GUI, then selects Git Bash or Browse Files, the malicious sh.exe is executed.

  • CVE-2025-27614: A High-Risk Gitk Vulnerability Enabling System Compromise

    Overview

    In this blog post, we will discuss the recently identified vulnerability, CVE-2025-27614, which poses a significant risk to users of Gitk, a widely-used Git history browser based on Tcl/Tk. This vulnerability allows an attacker to deceive a user into executing potentially harmful scripts, leading to system compromise or data leakage. This issue is particularly serious due to the widespread use of Gitk and the severity of potential impacts, which include both system compromise and data leakage.

    Vulnerability Summary

    CVE ID: CVE-2025-27614
    Severity: High (CVSS: 8.6)
    Attack Vector: Local (Via cloned Git repositories)
    Privileges Required: User level
    User Interaction: Required (Social Engineering)
    Impact: Potential system compromise or data leakage

    Affected Products

    Product | Affected Versions

    Gitk | 2.41.0 to 2.43.6, 2.44.0 to 2.44.3, 2.45.0 to 2.45.3, 2.46.0 to 2.46.3, 2.47.0 to 2.47.2, 2.48.0 to 2.48.1, 2.49.0

    How the Exploit Works

    The exploit takes advantage of a design flaw in Gitk that allows an attacker to craft a Git repository in such a way that tricks a user into running any script supplied by the attacker. This is achieved by invoking ‘gitk filename’, where the filename has a particular structure. The script is run with the privileges of the user, enabling a potential system compromise or data leakage. The exploit requires some degree of social engineering, as the user has to be convinced to clone and interact with the malicious repository.

    Conceptual Example Code

    Here’s a conceptual example of how the vulnerability might be exploited. This is a hypothetical shell command that the user might be tricked into running:

    $ gitk malicious_filename

    In this example, “malicious_filename” is a file within the cloned Git repository that has been crafted by the attacker to trigger the exploit when interacted with via Gitk.

    Mitigation

    The vulnerability has been fixed in the following Gitk versions: 2.43.7, 2.44.4, 2.45.4, 2.46.4, 2.47.3, 2.48.2, 2.49.1, and 2.50. It is highly recommended to update to these versions to prevent potential exploitation. If immediate patching is not possible, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may serve as temporary mitigation, but should by no means be considered a long-term solution.

  • CVE-2025-7571: Critical Vulnerability in UTT HiPER 840G Leading to Buffer Overflow

    Overview

    CVE-2025-7571 is a highly critical vulnerability found in versions up to 3.1.1-190328 of the UTT HiPER 840G. This vulnerability is notable due to the potential it carries for a system compromise or data leakage. It concerns an unknown part of the file /goform/aspApBasicConfigUrcp that can be manipulated through the Username argument to result in a buffer overflow. The severity of this vulnerability is compounded by the fact that the exploit has been made publicly available, and that the vendor, despite being informed, has not responded with a fix.

    Vulnerability Summary

    CVE ID: CVE-2025-7571
    Severity: Critical (CVSS: 8.8)
    Attack Vector: Remote
    Privileges Required: None
    User Interaction: None
    Impact: System compromise and potential data leakage

    Affected Products

    Product | Affected Versions

    UTT HiPER 840G | Up to 3.1.1-190328

    How the Exploit Works

    The exploit works by manipulating the Username argument in the /goform/aspApBasicConfigUrcp file. By providing an excessively long string as the username, an attacker can overflow the buffer, potentially leading to arbitrary code execution, system compromise, or data leakage. Since the exploit has been publicly disclosed, any malicious actor with knowledge of this vulnerability can exploit it.

    Conceptual Example Code

    Here is a conceptual example of how this vulnerability might be exploited using an HTTP POST request:

    POST /goform/aspApBasicConfigUrcp HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
Username=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA... // long string to overflow buffer

    In the above example, an excessively long string is provided as the Username to overflow the buffer.

    Mitigation and Recommendations

    Until the vendor provides a patch, it’s recommended to use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation measure. These systems can detect and block attempts to exploit this vulnerability. Also, it’s advisable to restrict access to the affected system as much as possible until a patch is available. Regularly monitoring system logs for any unusual activity can help identify attempted exploits early.

  • CVE-2025-7574: Critical Vulnerability in LB-LINK Routers Leads to Improper Authentication

    Overview

    The cybersecurity landscape is constantly evolving, and with it, the emergence of new threats and vulnerabilities. One such vulnerability, which has been classified as critical, has been discovered in multiple models of LB-LINK routers. This vulnerability, identified as CVE-2025-7574, affects the web interface component of these routers, leading to improper authentication. As a result, attackers can potentially launch remote attacks, leading to system compromise or data leakage.
    The vulnerability has been publicly disclosed, increasing the risk of potential exploits. Despite early contact and disclosure to the vendor, there has been no response, raising serious concerns about the security of these devices and the data they protect. This vulnerability highlights the importance of maintaining up-to-date device software and the potential risks associated with using unsupported or outdated devices.

    Vulnerability Summary

    CVE ID: CVE-2025-7574
    Severity: Critical (CVSS score 9.8)
    Attack Vector: Network
    Privileges Required: None
    User Interaction: None
    Impact: Potential system compromise or data leakage

    Affected Products

    Product | Affected Versions

    LB-LINK BL-AC1900 | Up to 20250702
    LB-LINK BL-AC2100_AZ3 | Up to 20250702
    LB-LINK BL-AC3600 | Up to 20250702
    LB-LINK BL-AX1800 | Up to 20250702
    LB-LINK BL-AX5400P | Up to 20250702
    LB-LINK BL-WR9000 | Up to 20250702

    How the Exploit Works

    The vulnerability stems from a flaw in the ‘reboot/restore’ function of the ‘/cgi-bin/lighttpd.cgi’ file, which is a component of the web interface. This flaw allows for manipulation that leads to improper authentication. Since the vulnerability can be exploited remotely, an attacker doesn’t need physical access to the device, increasing the likelihood of potential attacks.

    Conceptual Example Code

    The following is a conceptual example of how the vulnerability might be exploited. This example represents a simple HTTP POST request that might be used to manipulate the vulnerable ‘reboot/restore’ function.

    POST /cgi-bin/lighttpd.cgi?reboot/restore HTTP/1.1
Host: vulnerable-router.example.com
Content-Type: application/json
{
"action": "reboot",
"auth_override": true
}

    In this hypothetical example, the “auth_override”: true part of the payload is the unauthorized command that takes advantage of the improper authentication. The real-life exploit could be more complex and require additional steps or information. Please note that this is a conceptual example and should not be used for any illicit activities.

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