Overview
The vulnerability CVE-2025-49690 pertains to a race condition in the Capability Access Management Service (camsvc). This vulnerability is capable of allowing an unauthorized attacker to elevate privileges locally. It presents a significant risk to any organization or individual using products or services that have not addressed this vulnerability, potentially leading to system compromise and data leakage.
Vulnerability Summary
CVE ID: CVE-2025-49690
Severity: High (7.4 CVSS)
Attack Vector: Local
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Capability Access Management Service | All versions prior to the patch
How the Exploit Works
This exploit takes advantage of a race condition in the Capability Access Management Service. A race condition is a flaw that occurs when the output of a process is dependent on the sequence or timing of other uncontrollable events. In this case, the attacker can manipulate the timing or sequence of events in the camsvc to gain unauthorized elevated privileges. This is done by concurrently executing using a shared resource with improper synchronization.
Conceptual Example Code
Here is a conceptual example of how this vulnerability might be exploited:
$ while true; do
> if [ -r /path/to/shared/resource ]; then
> cp /path/to/shared/resource /tmp
> chmod 777 /tmp/resource
> ./malicious_code /tmp/resource
> break
> fi
> doneIn this example, an attacker continuously checks if a shared resource is readable. Once it is, the attacker copies the resource, changes its permissions to be fully accessible, and then executes their malicious code on the resource.
Mitigation Guidance
The recommended mitigation for this vulnerability is to apply the patch provided by the vendor. If the patch cannot be applied immediately, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as temporary mitigation. These solutions can help detect and prevent unauthorized access attempts.