Heap-based buffer overflow in libbsd - CVE-2016-2090
Published: August 4, 2020
Vulnerability identifier: #VU33343
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2016-2090
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
libbsd
libbsd
Software vendor:
libbsd.freedesktop.org
libbsd.freedesktop.org
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
Off-by-one vulnerability in the fgetwln() function in libbsd before 0.8.2 allows attackers to have unspecified impact via unknown vectors, which trigger a heap-based buffer overflow.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
External links
- http://www.openwall.com/lists/oss-security/2016/01/28/5
- https://blog.fuzzing-project.org/36-Heap-buffer-overflow-in-fgetwln-function-of-libbsd.html
- https://bugs.freedesktop.org/show_bug.cgi?id=93881
- https://cgit.freedesktop.org/libbsd/commit/?id=c8f0723d2b4520bdd6b9eb7c3e7976de726d7ff7
- https://lists.debian.org/debian-lts-announce/2019/12/msg00036.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7KJE5SPSX7HEKLZ34LUTZLXWPEL2K353/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DIQKQ42Z7553D46QY3IMIQKS52QTNIHY/
- https://security.gentoo.org/glsa/201607-13
- https://usn.ubuntu.com/4243-1/