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CVE-2023-6780

Glibc: integer overflow in __vsyslog_internal()

Published: 1/31/2024 Last updated: 7/14/2026 Reserved: 12/13/2023

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

CNA assigner: redhat (53f830b8-0a3f-465b-8143-3b8a9948e749) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 5.3 Medium CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Opam packages affected (1)

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Products affected (15)

Product Vendor Version
Red Hat Enterprise Linux 7 Red Hat < publication
Red Hat Enterprise Linux 7 Red Hat < publication
Red Hat Enterprise Linux 6 Red Hat < publication
Red Hat Enterprise Linux 6 Red Hat < publication
Red Hat Enterprise Linux 9 Red Hat < publication
Fedora Fedora < publication
Red Hat Enterprise Linux 6 Red Hat < publication
Red Hat Enterprise Linux 7 Red Hat Winbox 3.20 and below.
Red Hat Enterprise Linux 8 Red Hat n/a
Red Hat Enterprise Linux 9 Red Hat n/a
Fedora Fedora All versions < V11.1.1.0
Red Hat Enterprise Linux 6 Red Hat < publication
Red Hat Enterprise Linux 7 Red Hat < publication
Red Hat Enterprise Linux 8 Red Hat < publication
glibc n/a < publication

References (40)

Credits (2)