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CVE-2023-6779

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.

Published

2024-01-31T14:15:48.700

Last Modified

2024-11-21T08:44:32.693

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.2 (HIGH)

Weaknesses

Type: Secondary
CWE-122
Type: Primary
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnu	glibc	< 2.39	Yes
Operating System	fedoraproject	fedora	38	Yes
Operating System	fedoraproject	fedora	39	Yes

References

http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry ([email protected])
http://seclists.org/fulldisclosure/2024/Feb/3 Exploit, Mailing List, Third Party Advisory ([email protected])
https://access.redhat.com/security/cve/CVE-2023-6779 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=2254395 Issue Tracking ([email protected])
https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/ Mailing List ([email protected])
https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/ Mailing List ([email protected])
https://security.gentoo.org/glsa/202402-01 Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20240223-0006/ Third Party Advisory ([email protected])
https://www.openwall.com/lists/oss-security/2024/01/30/6 Exploit, Mailing List ([email protected])
https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt Third Party Advisory ([email protected])
http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2024/Feb/3 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/security/cve/CVE-2023-6779 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=2254395 Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/ Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/ Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202402-01 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20240223-0006/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2024/01/30/6 Exploit, Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)