CVE-2019-20919: canonical ubuntu_linux NULL Pointer Dereference
CVSS: 4.7v3.1MediumModified
AliasesSUSE-SU-2020:2827-1SUSE-SU-2020:2828-1UBUNTU-CVE-2019-20919USN-4534-1DEBIAN-CVE-2019-20919openSUSE-SU-2020:1620-1openSUSE-SU-2020:1628-1
Published 17-09-2020Last modified 05-08-2024
Vulnerability summary
CVE-2019-20919 is a medium (CVSS 4.7) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 40.8% of scored vulnerabilities.
CVSS score
4.7/10
010
Medium · v3.1 (NVD)EPSS score
0.49%
0%100%
Low · -0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 5 · Related 3Timeline
- 17-09-2020PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in the DBI module before 1.643 for Perl. The hv_fetch() documentation requires checking for NULL and the code does that. But, shortly thereafter, it calls SvOK(profile), causing a NULL pointer dereference.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 4.7Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Low 1.9Preferred score · NVD (NIST)
AV:L/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
0.49%
Chance of exploitation in the next 30 days
Percentile
41%
Versus all other CVEs
30-day change
-0.02 pp
From 0.51% on 21-09-2026
21-09-202621-10-2026
EPSS score0.49%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Suse6 products
- perl-DBI&distro=SUSE Linux Enterprise High Performance Computing 15-ESPOS< 1.639-3.11.1
- perl-DBI&distro=SUSE Linux Enterprise High Performance Computing 15-LTSS< 1.639-3.11.1
- perl-DBI&distro=SUSE Linux Enterprise Module for Basesystem 15 SP1< 1.639-3.11.1
- perl-DBI&distro=SUSE Linux Enterprise Module for Basesystem 15 SP2< 1.642-3.6.1
- perl-DBI&distro=SUSE Linux Enterprise Server 15-LTSS< 1.639-3.11.1
Opensuse3 products
- leapEOL15.1 | 15.2
- perl-DBI&distro=openSUSE Leap 15.1< 1.639-lp151.3.13.1
- perl-DBI&distro=openSUSE Leap 15.2< 1.642-lp152.2.6.1
Debian2 products
- libdbi-perl< 1.643-1
- debian_linuxEOL9.0
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 18.04
Fedoraproject1 product
- fedoraEOL31
Perl1 product
- dbi< 1.643
Ubuntu1 product
- libdbi-perl< 1.630-1ubuntu0.1~esm5 | < 1.634-1ubuntu0.2 | < 1.640-1ubuntu0.2
7 vendors · 15 products
References
17 links- github.com/perl5-dbi/dbi/commit/eca7d7c8f43d96f6277e86d1000e842eb4cc67ffX Refsource MISCPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2020/09/msg00026.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.opensuse.org/opensuse-security-announce/2020-10/msg00012.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00013.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
Show all 17 references
- lists.opensuse.org/archives/…Advisory
- lists.opensuse.org/archives/…Advisory