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CVE-2023-6780

Glibc: integer overflow in __vsyslog_internal()

Published: Jan 31, 2024Updated: May 12, 2026 Sources: CVE List NVD BDU csafCWE-131
5.3MEDIUM
NVD MITRE
EPSS Score
2.7%
Top 15.4%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-131CWE-190

Affected Products

gnu
oss-project·USaka g. nu
glibc
OSS Libraries
fedoraproject
oss-project·USaka fedora project
fedoraOn-premOS
Operating Systems / linux-distro
Red Hat
commercial·US
Red Hat Enterprise Linux 6On-premOS
Operating Systems / linux-distro
Fedora
oss-projectaka fedora linux
FedoraOn-premOS
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
Fedora Project
oss-project·USaka fedora
FedoraOn-premOS
Operating Systems / linux-distro
and 6 more affected products View all →

Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
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References

http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html
packetstormsecurity.com
http://seclists.org/fulldisclosure/2024/Feb/3
seclists.org
https://access.redhat.com/security/cve/CVE-2023-6780
access.redhat.com
and 266 more references View all →

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