In GNU tar before 1.35, mishandled extension attributes in a PAX archive can lead to an application crash in xheader.c. This vulnerability has been classified as medium severity with a CVSS score of 6.2, indicating a significant risk for affected systems.
The risk to organizations includes potential downtime and disruptions in service due to application crashes. Attackers may leverage this vulnerability to exploit local systems, particularly if they can create or manipulate PAX archives. Organizations should prioritize patching immediately.
At this time, there are no known exploits or public proof-of-concept (PoC) code available for this vulnerability. However, the local attack vector and the potential impact on system availability necessitate an urgent response from IT and security teams.
Organizations using GNU tar must ensure they are running versions 1.35 or later to mitigate this vulnerability. Regular vulnerability assessments and timely updates are crucial for maintaining the security posture.
Vulnerability Details
This vulnerability allows mishandling of extension attributes in a PAX archive, leading to an application crash. The CVSS score of 6.2 indicates a medium severity level, suggesting that while the vulnerability is not trivial, it poses a risk that must be managed.
The affected product is GNU tar, with versions prior to 1.35 being vulnerable. The vulnerability was published on March 27, 2024, and has been classified under the CWE category of unspecified.
Technical Analysis
The root cause of this vulnerability stems from improper handling of extension attributes within PAX archives, specifically in the source file xheader.c. The attack vector is local, meaning an attacker must have access to the target system to exploit the vulnerability.
The attack complexity is low, as no special privileges are required, and no user interaction is needed to trigger the crash once the malformed PAX archive is processed. The impact on availability is high, leading to potential application crashes.
Risk & Impact Analysis
Real-world deployment risks include service interruptions due to application crashes, which could affect business operations significantly. The blast radius potential is considerable if the vulnerability is exploited in a production environment, as multiple services might rely on GNU tar for archiving and file management tasks.
The medium severity classification suggests that while immediate exploitation is not guaranteed, organizations should treat this vulnerability with urgency. Organizations should address this vulnerability in their priority patch cycle.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to the vendor patch (1.35) are affected. Organizations should upgrade to the latest version of GNU tar to mitigate this vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations should update to GNU tar version 1.35 or later. If a patch is unavailable, consider employing workarounds such as restricting access to the tar command or monitoring for unusual application behavior.
For comprehensive security practices, organizations should implement penetration testing to identify similar vulnerabilities in their environments.
Detection Guidance
Monitor logs for indicators of application crashes associated with GNU tar. Look for behavioral anomalies in applications that utilize PAX archives. Additionally, maintain visibility into system changes that may indicate exploitation attempts.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential to disrupt organizational operations through application crashes. It highlights the importance of robust application testing and security assessments during development.
Security teams should take this as a reminder to regularly review their vulnerability management strategies, ensuring they remain effective against evolving threats. For further reading on best practices in application security, refer to our article on penetration testing methodology and its importance in identifying vulnerabilities.
For organizations utilizing cloud services, consider reviewing our insights on cloud penetration testing to ensure your environment is secure.
Finally, organizations should consider adopting a proactive approach by implementing vulnerability management programs that can help in tracking and remediating vulnerabilities in a timely manner.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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