CVE-2019-20367: canonical ubuntu_linux Out-of-bounds Read
CVSS: 9.1v3.1CriticalModified
AliasesALPINE-CVE-2019-20367MGASA-2020-0061SUSE-SU-2020:1298-1UBUNTU-CVE-2019-20367DEBIAN-CVE-2019-20367DLA-2566-1openSUSE-SU-2020:0679-1
Published 08-01-2020Last modified 14-10-2026
Vulnerability summary
CVE-2019-20367 is a critical (CVSS 9.1) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 2.87% chance of exploitation in the next 30 days, higher than 86.6% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.1/10
010
Critical · v3.1 (NVD)EPSS score
2.87%
0%100%
Low · +0.07 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 08-01-2020PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
Description
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).
CVSS metrics
5 scores · 4 sources · 2 versionsCritical 9.1Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Medium 6.4Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.87%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
+0.07 pp
From 2.80% on 20-09-2026
20-09-202620-10-2026
EPSS score2.87%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (gitlab.freedesktop.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- libbsd< 0.8.3-1+deb9u1 | < 0.10.0-1
- debian_linuxEOL9.0
Opensuse2 products
- leapEOL15.1
- libbsd&distro=openSUSE Leap 15.1< 0.8.7-lp151.3.3.1
Alpine1 product
- libbsd< 0.9.1-r1 | < 0.10.0-r0
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 18.04 | 19.04
Freedesktop1 product
- libbsd< 0.10.0
Mageia1 product
- libbsd< 0.9.1-3.1.mga7
Suse1 product
- libbsd&distro=SUSE Linux Enterprise Module for Basesystem 15 SP1< 0.8.7-3.3.17
Ubuntu1 product
- libbsd< 0.6.0-2ubuntu1+esm1 | < 0.8.2-1ubuntu0.1 | < 0.8.7-1ubuntu0.1
8 vendors · 10 products
References
19 links- lists.freedesktop.org/archives/libbsd/2019-August/000229.htmlX Refsource MISCREPORTMailing ListRelease NotesVendor Advisory
- gitlab.freedesktop.org/libbsd/libbsd/commit/9d917aad37778a9f4a96ba358415f077f3f36f3bX Refsource MISCExploitVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2020-05/msg00043.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2021/02/msg00027.htmlMailing ListX Refsource MLISTThird Party Advisory
Show all 19 references
- lists.opensuse.org/archives/…Advisory