Author: Ameeba

CVE-2011-10007: Arbitrary Code Execution Vulnerability in File::Find::Rule for Perl
Overview

This blog post will delve into the details of a serious vulnerability found in File::Find::Rule through 0.34 for Perl, designated as CVE-2011-10007. This vulnerability could allow an attacker to execute arbitrary code when the `grep()` function encounters a specifically crafted filename – a significant issue because Perl is widely used for system management tasks, network programming, and web development. The vulnerability could potentially impact a vast number of servers and systems, putting sensitive data at risk and providing an entry point for further attacks.

Vulnerability Summary

CVE ID: CVE-2011-10007
Severity: High (8.8)
Attack Vector: Local
Privileges Required: Low
User Interaction: Required
Impact: Arbitrary Code Execution, potential system compromise and data leakage

Affected Products

Product | Affected Versions

File::Find::Rule for Perl | 0.34 and prior versions

How the Exploit Works

The vulnerability comes into play when the `grep()` function in File::Find::Rule encounters a filename that has been crafted in a specific way by an attacker. A file handle is opened with the two-argument form of `open()`. This allows the attacker-controlled filename to provide the MODE parameter to `open()`, which in turn transforms the filename into a command to be executed. With this, an attacker could potentially execute arbitrary code on the affected system.

Conceptual Example Code

The following is a conceptual example of how the vulnerability might be exploited:
```
$ mkdir /tmp/poc; echo > "/tmp/poc/|id"
$ perl -MFile::Find::Rule \
-E 'File::Find::Rule->grep("foo")->in("/tmp/poc")'
```
In the above example, the directory `/tmp/poc` is created, and a file named `|id` is created within it. When the `grep()` function in File::Find::Rule traverses this directory, it encounters the maliciously crafted filename `|id`, which in turn opens a file handle with `open()` and executes the `id` command. The result is displayed, revealing the user and group IDs of the current user, demonstrating a successful arbitrary command execution.

Prevention and Mitigation

The best course of action to prevent exploitation of this vulnerability is to apply the vendor-provided patch. If for some reason this is not possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help detect and prevent attempted exploits. However, these are only temporary solutions and do not address the root cause of the vulnerability. Therefore, updating to a patched version of File::Find::Rule is highly recommended.
June 11, 2025
CVE-2025-3055: Critical Arbitrary File Deletion Vulnerability in WP User Frontend Pro Plugin
Overview

A critical vulnerability, CVE-2025-3055, has been discovered in the WP User Frontend Pro plugin for WordPress, affecting all versions up to and including 4.1.3. This vulnerability is troubling news for organizations using WordPress as their primary content management system, as it could potentially lead to system compromise or data leakage.
The vulnerability is primarily due to insufficient file path validation in the delete_avatar_ajax() function. This makes it possible for authenticated attackers with Subscriber-level access and above, to delete arbitrary files on the server. When the right file such as wp-config.php is deleted, this could easily result in remote code execution.

Vulnerability Summary

CVE ID: CVE-2025-3055
Severity: Critical (CVSS score 8.1)
Attack Vector: Network
Privileges Required: Low (Subscriber-level access)
User Interaction: Required
Impact: Potential system compromise, data leakage

Affected Products

Product | Affected Versions

WP User Frontend Pro Plugin for WordPress | Up to and including 4.1.3

How the Exploit Works

The exploit takes advantage of the poorly validated file path in the delete_avatar_ajax() function of the WP User Frontend Pro plugin. An attacker with subscriber-level privileges or above, can send a maliciously crafted request to the function. This request can instruct the function to delete an important system file, such as wp-config.php. Once this file is deleted, the attacker can execute remote commands, leading to a system compromise.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited. This pseudocode represents a malicious HTTP request that targets the delete_avatar_ajax() function to delete the wp-config.php file.
```
POST /wp-admin/admin-ajax.php HTTP/1.1
Host: targetsite.com
Content-Type: application/x-www-form-urlencoded
action=wpuf_delete_avatar&nonce=abc123&user_id=1&filepath=../../../wp-config.php
```
In this example, the filepath parameter is manipulated to traverse directories and target the wp-config.php file for deletion. The nonce and user_id parameters would be replaced with actual values in a real attack.

Mitigation

The best way to remediate this vulnerability is to apply the vendor-supplied patch. If this is not possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. It is always recommended to keep all plugins and themes up-to-date to prevent exploitation of known vulnerabilities.
June 11, 2025
CVE-2025-3054: Arbitrary File Upload Vulnerability in WP User Frontend Pro Plugin for WordPress
Overview

The CVE-2025-3054 vulnerability is a critical security flaw found in the WP User Frontend Pro plugin for WordPress. This flaw allows authenticated attackers with subscriber-level access or above to upload arbitrary files to the affected site’s server. The vulnerability arises due to a lack of file type validation in the upload_files() function, thus potentially enabling remote code execution. It is crucial for all WordPress sites using this plugin, particularly those that have the ‘Private Message’ module enabled and are using the Business version of the PRO software, to take immediate action and secure their systems.

Vulnerability Summary

CVE ID: CVE-2025-3054
Severity: High (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: Low (Subscriber-level access)
User Interaction: Required
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

WP User Frontend Pro Plugin for WordPress | Up to and including 4.1.3

How the Exploit Works

The vulnerability is based on the lack of file type validation in the upload_files() function within the WP User Frontend Pro plugin. An attacker with subscriber-level access can misuse this function to upload arbitrary files, including those having malicious content. Once uploaded, these files could be executed on the server, leading to potential remote code execution and system compromise. It is important to note that this exploit requires the ‘Private Message’ module to be enabled.

Conceptual Example Code

Here’s a conceptual example of how an attacker might exploit this vulnerability:
```
POST /wp-user-frontend-pro/upload_files HTTP/1.1
Host: target-wordpress-site.com
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW
------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="file"; filename="malicious_script.php"
Content-Type: application/x-php
<?php system($_GET['cmd']); ?>
------WebKitFormBoundary7MA4YWxkTrZu0gW--
```
In this example, the attacker sends a HTTP POST request to the vulnerable endpoint with a malicious PHP script as a file upload. If successful, this script could enable the attacker to execute arbitrary commands on the server.

Remediation

To mitigate this vulnerability, it is strongly recommended to apply the vendor patch once it is available. Until then, using a web application firewall (WAF) or intrusion detection system (IDS) can aid in detecting and preventing potential attacks. Additionally, disable the ‘Private Message’ module if it is not in use. Regularly updating all plugins and monitoring for suspicious activity can further enhance security.
June 11, 2025
CVE-2025-5629: Critical Buffer Overflow Vulnerability in Tenda AC10
Overview

A critical vulnerability has been discovered in Tenda AC10 routers, affecting versions up to 15.03.06.47, that could potentially compromise the entire system or lead to data leakage. This vulnerability, identified as CVE-2025-5629, pertains to a buffer overflow condition caused by the manipulation of the `startIp/endIp` arguments in the `formSetPPTPServer` function of `/goform/SetPptpServerCfg` file in the HTTP Handler component. Given the widespread use of Tenda AC10 routers, the impact of this vulnerability is extensive and its mitigation is of paramount importance.

Vulnerability Summary

CVE ID: CVE-2025-5629
Severity: Critical (8.8 CVSS score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Tenda AC10 | Up to 15.03.06.47

How the Exploit Works

The exploit takes advantage of a buffer overflow condition in the HTTP Handler component of the Tenda AC10 routers. This is achieved by sending specially crafted HTTP requests with manipulated `startIp/endIp` arguments to the `formSetPPTPServer` function of the `/goform/SetPptpServerCfg` file. The buffer overflow condition can lead to unexpected behavior, including system crashes, arbitrary code execution, or even a complete system takeover, thereby potentially compromising user’s data.

Conceptual Example Code

Here’s a conceptual example of an HTTP request that could exploit this vulnerability:
```
POST /goform/SetPptpServerCfg HTTP/1.1
Host: target.tenda.router
Content-Type: application/x-www-form-urlencoded
startIp=192.168.1.1&endIp=192.168.1.256
```
In this example, the `endIp` is set to `192.168.1.256`, which is an invalid IP address, causing a buffer overflow in the handling function.

Recommended Mitigations

Users are strongly advised to apply the patch provided by the vendor to mitigate this vulnerability. In case the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. Additionally, it is recommended to disable remote management features if they are not required and regularly update and patch all software to prevent exploitation of known vulnerabilities.
June 11, 2025
CVE-2025-5619: Critical Remote Buffer Overflow Vulnerability in Tenda CH22 1.0.0.1
Overview

A critical vulnerability has been discovered in Tenda CH22 1.0.0.1, a popular networking device. This vulnerability, identified as CVE-2025-5619, affects the ‘formaddUserName’ function of the ‘/goform/addUserName’ file within the system. The function’s argument manipulation, specifically the ‘Password’, can lead to a stack-based buffer overflow situation. As with many other critical vulnerabilities, this issue holds a high risk for potential system compromise or data leakage. Cybersecurity analysts and IT professionals should be aware and vigilant, given that the exploit has already been disclosed to the public and can be initiated remotely.

Vulnerability Summary

CVE ID: CVE-2025-5619
Severity: Critical (8.8 CVSS Score)
Attack Vector: Remote
Privileges Required: Low
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Tenda | CH22 1.0.0.1

How the Exploit Works

The vulnerability lies within the ‘formaddUserName’ function in the ‘/goform/addUserName’ file. The exploit is triggered when the ‘Password’ argument is manipulated, which leads to a stack-based buffer overflow. This overflow can potentially overwrite critical program data, system control data, or even the return address. The exploit can be initiated remotely without any user interaction. Successful exploitation may result in system compromise or data leakage.

Conceptual Example Code

To illustrate a potential exploit, consider the following example of a malicious HTTP request:
```
POST /goform/addUserName HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
username=admin&password=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
```
In this example, the password field is filled with an excessively long string, causing a buffer overflow. This could potentially overwrite critical data and compromise the system.
Please note that this is a conceptual example and the actual exploit may vary. This information is provided for educational purposes, to understand the nature of the vulnerability and to encourage swift mitigation actions.
June 11, 2025
CVE-2025-5609: Critical buffer overflow vulnerability in Tenda AC18 15.03.05.05
Overview

CVE-2025-5609 is a critical vulnerability found in Tenda AC18 15.03.05.05, a widely-used networking device. This vulnerability, affecting the function fromadvsetlanip in the file /goform/AdvSetLanip, has been publicly disclosed and is known to be exploitable. Given the severity of the issue and the potential for system compromise or data leakage, it’s crucial for users and administrators of Tenda AC18 devices to understand the risks, apply mitigation strategies, and stay informed about any further developments.

Vulnerability Summary

CVE ID: CVE-2025-5609
Severity: Critical (CVSS: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage

Affected Products

Product | Affected Versions

Tenda | AC18 15.03.05.05

How the Exploit Works

The vulnerability lies in the handling of the ‘lanMask’ argument in the fromadvsetlanip function. By manipulating this argument, an attacker can trigger a buffer overflow condition. This condition can lead to unexpected behavior, including system crashes, data corruption, and in worst-case scenarios, allow the attacker to execute arbitrary code or control the system.

Conceptual Example Code

The actual exploit code is not provided to prevent misuse, but a conceptual example can help understand how an attack might be carried out. In a hypothetical attack, a malicious actor might send an HTTP POST request with an oversized ‘lanMask’ argument to the vulnerable endpoint.
```
POST /goform/AdvSetLanip HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
lanMask=256.256.256.256&...[remainder of the payload]
```
In this example, ‘lanMask’ is set to a value that exceeds the expected input size, potentially triggering a buffer overflow. This could lead to memory corruption, crashing the system, or potentially allowing the attacker to execute arbitrary code.

Mitigation

Tenda users are advised to apply patches provided by the vendor as soon as possible. If patches are not immediately available or if patching is not immediately feasible, temporary mitigation can be achieved by implementing a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to detect and block exploit attempts. As a best practice, regular software updates should be a part of routine system maintenance to avoid falling victim to known vulnerabilities.
June 11, 2025
CVE-2025-5608: Critical Remote Buffer Overflow Vulnerability in Tenda AC18
Overview

CVE-2025-5608 is a critical vulnerability found in Tenda AC18 15.03.05.05, a widely used wireless router. This vulnerability lies in the formsetreboottimer function of the file /goform/SetSysAutoRebbotCfg. It is of particular concern because the vulnerability can be exploited remotely, posing a significant risk to users’ data security and system integrity. With the exploit already disclosed to the public, immediate actions are required to mitigate the threat.

Vulnerability Summary

CVE ID: CVE-2025-5608
Severity: Critical (8.8/10)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Tenda | AC18 15.03.05.05

How the Exploit Works

The vulnerability is a buffer overflow that occurs when an overly long argument is fed to the ‘rebootTime’ parameter in the formsetreboottimer function in the /goform/SetSysAutoRebbotCfg file of Tenda AC18. This overflow can then be manipulated to execute arbitrary code on the system. Given that this operation can be performed remotely, an attacker does not need physical access to the device to exploit this vulnerability.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited. This could be a sample HTTP POST request that sends an overly long rebootTime parameter:
```
POST /goform/SetSysAutoRebbotCfg HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
rebootTime=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA......
```
In this example, the ‘A’s represent an overly long argument, causing buffer overflow. An attacker could replace these ‘A’s with malicious code designed to compromise the system or leak data.

Mitigation

Users of Tenda AC18 15.03.05.05 are advised to apply the vendor’s patch as soon as possible. If the patch cannot be immediately applied, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation, effectively blocking attempts to exploit this vulnerability. As always, users should ensure that their systems and applications are regularly updated to the most recent versions to protect against known vulnerabilities.
June 11, 2025
CVE-2025-5630: Critical Buffer Overflow Vulnerability in D-Link DIR-816 1.10CNB05
Overview

Cybersecurity is a constantly evolving field, with new vulnerabilities appearing that challenge our defense strategies. This blog post will focus on CVE-2025-5630, a critical vulnerability that has been detected in D-Link DIR-816 1.10CNB05. This issue affects an unknown code component within the file /goform/form2lansetup.cgi, which can lead to a dangerous stack-based buffer overflow when the ‘ip’ argument is manipulated.
The severity of this vulnerability cannot be overstated, given its potential for remote exploitation. It poses a significant threat to outdated products no longer supported by their vendors, thereby raising the potential for data leakage or a complete system compromise.

Vulnerability Summary

CVE ID: CVE-2025-5630
Severity: Critical, CVSS Score 9.8
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

D-Link DIR-816 | 1.10CNB05

How the Exploit Works

The exploit works by manipulating the ‘ip’ argument in the /goform/form2lansetup.cgi file. This manipulation overflows the stack buffer causing unexpected behavior in the system. The overflow can overwrite other portions of memory, and the attacker could use this to execute arbitrary code. This allows potential unauthorized access to sensitive information, or even full control over the system.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited:
```
POST /goform/form2lansetup.cgi HTTP/1.1
Host: vulnerable_device_ip
Content-Type: application/x-www-form-urlencoded
ip=%s  # This is where the malicious input would be inserted
```
In the above example, the attacker would replace `%s` with a carefully crafted string designed to overflow the stack buffer.

Mitigation and Recommendations

For mitigation, it is recommended to apply vendor patches as soon as they become available. Since the affected products are no longer supported by the vendor, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation method.
However, the most effective course of action is to replace outdated and unsupported devices with newer ones that receive regular security updates from the manufacturer. Practicing good cybersecurity hygiene, such as regularly updating and patching systems, can help prevent exploitation of these types of vulnerabilities.
June 11, 2025
CVE-2025-5624: Critical Stack-Based Buffer Overflow Vulnerability in D-Link DIR-816 1.10CNB05
Overview

In the ever-evolving landscape of cybersecurity, a critical vulnerability has been discovered in the D-Link DIR-816 version 1.10CNB05. This vulnerability, termed as CVE-2025-5624, pertains to a stack-based buffer overflow that can potentially lead to system compromise or data leakage. It affects the QoSPortSetup function of the /goform/QoSPortSetup file. The vulnerability is of grave concern due to its high severity, remote attack capability, and the fact that it affects products that are no longer supported by the maintainer.

Vulnerability Summary

CVE ID: CVE-2025-5624
Severity: Critical – 9.8 CVSS v3
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System Compromise, Data Leakage

Affected Products

Product | Affected Versions

D-Link DIR-816 | 1.10CNB05

How the Exploit Works

The exploit works by manipulating the argument port0_group/port0_remarker/ssid0_group/ssid0_remarker in the QoSPortSetup function of the /goform/QoSPortSetup file. This manipulation leads to a stack-based buffer overflow, which in turn can lead to system compromise or data leakage. The attack can be initiated remotely, and hence poses a significant threat to the affected systems.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This example represents a malicious HTTP request that might be used to trigger the buffer overflow:
```
POST /goform/QoSPortSetup HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
port0_group=AAAAAAAA...AAAA&port0_remarker=BBBBBBBB...BBBB&ssid0_group=CCCCCCCC...CCCC&ssid0_remarker=DDDDDDDD...DDDD
```
In the above example, ‘A’, ‘B’, ‘C’, and ‘D’ represent an excessive amount of data which triggers the stack-based buffer overflow.
It’s essential to note that this vulnerability only affects products that are no longer supported by the maintainer. Therefore, the recommended mitigation is to apply the vendor patch or use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as temporary mitigation. As always, it’s recommended to upgrade to the latest supported versions of software whenever possible.
June 11, 2025
CVE-2025-5623: A Critical Stack-based Buffer Overflow Vulnerability in D-Link DIR-816 1.10CNB05
Overview

In the ever-growing world of cybersecurity threats, a new vulnerability has emerged that is shaking the foundations of outdated network devices. The CVE-2025-5623 is a severe vulnerability identified in D-Link DIR-816 1.10CNB05, a product which is no longer supported by the manufacturer, making it a prime target for cybercriminals. This vulnerability exploits the ‘qosClassifier’ function of the file ‘/goform/qosClassifier. It is classified as critical due to its severe impact potential and the ease of its exploitation.
The primary concern regarding this vulnerability is that the attack can be initiated remotely, making any device with an internet connection a potential target. The disclosure of the exploit to the public further amplifies its threat level. It’s a race against time for network administrators and users to mitigate this vulnerability before falling victim to a potential system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-5623
Severity: Critical (CVSS 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

D-Link DIR-816 | 1.10CNB05

How the Exploit Works

The exploit takes advantage of a stack-based buffer overflow vulnerability within the ‘qosClassifier’ function of the file ‘/goform/qosClassifier. It involves the manipulation of the ‘dip_address’ or ‘sip_address’ argument, causing an excessive amount of data to be loaded into the stack memory, triggering a stack overflow. As a result, an attacker can execute arbitrary code or cause a denial of service, potentially leading to system compromise or data leakage.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This is a simplified HTTP request that shows how an attacker might overload the ‘dip_address’ or ‘sip_address’ value with excessive data.
```
POST /goform/qosClassifier HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
dip_address=AAAAAAAA...[long string of As]...
```
Note: The above is a conceptual representation and may not accurately reflect the actual code used in an attack.

Mitigation Guidance

While the ideal solution is to apply the vendor patch for this vulnerability, it is important to note that D-Link no longer supports the affected product. As a temporary mitigation, utilising Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help to detect and prevent exploit attempts. However, considering the severity and potential impact of this vulnerability, users are strongly recommended to upgrade their network devices to models that are currently supported and regularly updated by the vendor.
June 11, 2025