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CVE-2019-7309

5.5 · MEDIUM

In the GNU C Library (aka glibc or libc6) through 2.29, the memcmp function for the x32 architecture can incorrectly return zero (indicating that the inputs are equal) because the RDX most signific…

Published Feb 3, 2019EPSS 0.61%

Overview

CVE-2019-7309 is a medium-severity vulnerability. It was published on February 3, 2019 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the GNU C Library (aka glibc or libc6) through 2.29, the memcmp function for the x32 architecture can incorrectly return zero (indicating that the inputs are equal) because the RDX most significant bit is mishandled.

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

Refwww.securityfocus.com/bid/106835Refsecurity.gentoo.org/glsa/202006-04Refsourceware.org/bugzilla/show_bug.cgi?id=24155Refsourceware.org/ml/libc-alpha/2019-02/msg00041.htmlRefwww.securityfocus.com/bid/106835Refsecurity.gentoo.org/glsa/202006-04Refsourceware.org/bugzilla/show_bug.cgi?id=24155Refsourceware.org/ml/libc-alpha/2019-02/msg00041.html

How CyberStrike helps

Frequently asked questions

What is CVE-2019-7309?

CVE-2019-7309 is a medium-severity vulnerability. It was published on February 3, 2019 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

How severe is CVE-2019-7309?

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-7309?

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-2019-7309?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-7309 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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