CVE-2023-6779
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.3 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
50.3%
An off-by-one heap-based buffer 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 message bigger than INT_MAX bytes, leading to an incorrect calculation of the buffer size to store the message, resulting in an application crash. This issue affects glibc 2.37 and newer.
Affected configurations
References
packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html
seclists.org/fulldisclosure/2024/Feb/3
access.redhat.com/security/cve/CVE-2023-6779
bugzilla.redhat.com/show_bug.cgi?id=2254395
lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/
lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/
security.gentoo.org/glsa/202402-01
security.netapp.com/advisory/ntap-20240223-0006/
www.openwall.com/lists/oss-security/2024/01/30/6
www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.3 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
50.3%