Cyber Resilience

CVE-2023-6780

MediumPublic PoCUpdated

Published: 31 January 2024

Published
31 January 2024
Modified
12 May 2026
KEV Added
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Patch
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CVSS Score v3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS Score 0.0023 45.9th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-6780 is a medium-severity Incorrect Calculation of Buffer Size (CWE-131) vulnerability in Fedoraproject Fedora. Its CVSS base score is 5.3 (Medium).

Operationally, ranked at the 45.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

An integer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a very long message, leading to an incorrect…

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calculation of the buffer size to store the message, resulting in undefined behavior. This issue affects glibc 2.37 and newer.

CWE(s)
CWE-131CWE-190

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

gnu
glibc
2.37 — 2.39
fedoraproject
fedora
38, 39

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References