Buffer overflow in Freedesktop Libbsd
CVE-2016-2090
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Freedesktop Libbsd
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 8.0
- Fedoraproject Fedora — versions 24, 25
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- blog.fuzzing-project.org/36-Heap-buffer-overflow-in-fgetwln-function-of-libbsd… (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- bugs.freedesktop.org/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2016/01/28/5 (mailing-list, Mailing List, Third Party Advisory)
- cgit.freedesktop.org/libbsd/commit/ (Patch, Third Party Advisory, Issue Tracking)
- security.gentoo.org/glsa/201607-13 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/12/msg00036.html (mailing-list, Third Party Advisory)
- usn.ubuntu.com/4243-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-2090?
- CVE-2016-2090 is a critical-severity vulnerability in Freedesktop Libbsd, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-01-13.
- How severe is CVE-2016-2090?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-2090 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.