Out-of-bounds Read in Freedesktop Libbsd
CVE-2019-20367
nlist.c in libbsd before 0.10.0 has an out-of-bounds read during a comparison for a symbol name from the string table (strtab).
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.028 (85.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Freedesktop Libbsd
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 9.0
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.freedesktop.org/archives/libbsd/2019-August/000229.html (Mailing List, Release Notes, Vendor Advisory)
- gitlab.freedesktop.org/libbsd/libbsd/commit/9d917aad37778a9f4a96ba358415f077f3f… (Exploit, Vendor Advisory)
- usn.ubuntu.com/4243-1/ (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-05/msg00043.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/02/msg00027.html (mailing-list, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/ra781e51cf1ec40381c98cddc073b3576fb56c3978f4564d2f… (mailing-list)
- lists.apache.org/thread.html/r0e913668380f59bcbd14fdd8ae8d24f95f99995e290cd18a7… (mailing-list)
Frequently asked questions
- What is CVE-2019-20367?
- CVE-2019-20367 is a critical-severity vulnerability in Freedesktop Libbsd, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2020-01-08.
- How severe is CVE-2019-20367?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2019-20367 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.