Out-of-bounds write in Bzip3 - CVE-2023-29416
Published: August 18, 2023
Vulnerability identifier: #VU79703
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-29416
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when processing untrusted input in libbzip3.a. A remote attacker can trigger an out-of-bounds write and crash the application.
Affected software
Bzip3
Fedora
bzip3
Fedora
bzip3
How to mitigate CVE-2023-29416
Install update from vendor's website.
Bzip3 - update to 1.3.0
bzip3 - addressed in versions 1.3.0-1.el8, 1.3.0-1.el9, 1.3.0-1.fc36, 1.3.0-1.fc37, 1.3.0-1.fc38
bzip3 - addressed in versions 1.3.0-1.el8, 1.3.0-1.el9, 1.3.0-1.fc36, 1.3.0-1.fc37, 1.3.0-1.fc38
External References
- https://github.com/kspalaiologos/bzip3/issues/92
- https://github.com/kspalaiologos/bzip3/compare/1.2.3...1.3.0
- https://github.com/kspalaiologos/bzip3/commit/bfa5bf82b53715dfedf048e5859a46cf248668ff
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW/