Executive Summary

This vulnerability exists in libgnutls, where a remote attacker can send an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token. This action triggers a short heap overread, which is a type of memory corruption.

The result of this memory corruption is potential information disclosure.

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Compliance Impact

This vulnerability in libgnutls could lead to information disclosure due to a short heap overread triggered by a remote attacker during an RSA key exchange. Such information disclosure vulnerabilities can potentially impact compliance with data protection standards and regulations like GDPR and HIPAA, which require the protection of sensitive data against unauthorized access.

However, specific impacts on compliance depend on the context of use, the nature of the data processed, and the mitigation measures in place. The CVE description does not provide explicit details on compliance implications.

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Impact Analysis

The vulnerability can lead to information disclosure due to memory corruption caused by a short heap overread.

Because the attack can be performed remotely without any privileges or user interaction, it poses a significant security risk.

The CVSS score of 8.2 indicates a high severity, with impact primarily on confidentiality and availability.

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Mitigation Strategies

To mitigate this vulnerability, you should update libgnutls to the latest version where the fix for the heap overread issue has been implemented.

Ensure that your systems using GnuTLS, especially those using RSA keys backed by PKCS#11 tokens, are patched promptly to prevent exploitation.

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