CVE-2019-7309

Public Exploit

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.

5.5

CVSS

Severity: Medium

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.19%

Vendor Advisory gentoo.org

Affected: n/a n/a

References

Link	Tags
http://www.securityfocus.com/bid/106835	vdb entry third party advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=24155	issue tracking exploit third party advisory
https://sourceware.org/ml/libc-alpha/2019-02/msg00041.html	third party advisory mailing list
https://security.gentoo.org/glsa/202006-04	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-7309?: CVE-2019-7309 has been scored as a medium severity vulnerability.
How to fix CVE-2019-7309?: To fix CVE-2019-7309, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-7309 being actively exploited in the wild?: It is possible that CVE-2019-7309 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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