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CVE-2019-12904

5.9 · MEDIUM

In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes.

Published Jun 20, 2019CWE-668EPSS 2.21%

Overview

CVE-2019-12904 is a medium-severity vulnerability. It was published on June 20, 2019 and has a CVSS 3.1 base score of 5.9 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2019-07/msg00049.htmlRefdev.gnupg.org/T4541GitHubgithub.com/gpg/libgcrypt/commit/a4c561aab1014c3630bc88faf6f5246fee16b020GitHubgithub.com/gpg/libgcrypt/commit/daedbbb5541cd8ecda1459d3b843ea4d92788762Reflists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3EReflists.opensuse.org/opensuse-security-announce/2019-07/msg00049.htmlRefdev.gnupg.org/T4541GitHubgithub.com/gpg/libgcrypt/commit/a4c561aab1014c3630bc88faf6f5246fee16b020GitHubgithub.com/gpg/libgcrypt/commit/daedbbb5541cd8ecda1459d3b843ea4d92788762Reflists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

How CyberStrike helps

Frequently asked questions

What is CVE-2019-12904?

CVE-2019-12904 is a medium-severity vulnerability. It was published on June 20, 2019 and has a CVSS 3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2019-12904?

This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-12904?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-12904?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-12904 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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