Memory Corruption in ClamAV GPT Parser

Executive Summary

This vulnerability is in the GPT file format parser of ClamAV. It allows an unauthenticated remote attacker to cause a denial of service (DoS) or other impacts by exploiting improper handling of an endian conversion operation. The flaw may lead to an out-of-bounds buffer write, which could terminate the ClamAV scanning process.

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Detection Guidance

Detect this vulnerability by checking the ClamAV version on your system. Use the command 'clamscan --version' to verify if your version is vulnerable. Ensure ClamAV is updated to the latest patched version to avoid exploitation.

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Impact Analysis

If exploited, this vulnerability could cause the ClamAV scanning process to crash, leading to a DoS condition. This means the affected device may stop scanning files properly, potentially allowing malicious content to go undetected.

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Compliance Impact

This vulnerability may impact compliance with standards like GDPR or HIPAA by enabling denial-of-service conditions that disrupt security scanning processes. A DoS could prevent timely detection of malware, potentially violating data protection requirements for continuous monitoring and threat mitigation.

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Mitigation Strategies

Immediately update ClamAV to the latest version to patch the vulnerability. Disable automatic processing of GPT files if possible, or restrict file scanning to trusted sources. Monitor network traffic for suspicious file submissions targeting ClamAV.

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