CVE-2019-3820: canonical ubuntu_linux Improper Authorization
CVSS: 4.8v3.0MediumModified
AliasesSUSE-SU-2019:1390-1SUSE-SU-2019:1459-1RHSA-2020:1021UBUNTU-CVE-2019-3820USN-3966-1DEBIAN-CVE-2019-3820openSUSE-SU-2019:1582-1
Published 06-02-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-3820 is a medium (CVSS 4.8) Improper Authorization vulnerability in canonical ubuntu_linux. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.3% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
4.8/10
010
Medium · v3.0 (CVE.org)EPSS score
0.50%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 06-02-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
It was discovered that the gnome-shell lock screen since version 3.15.91 did not properly restrict all contextual actions. An attacker with physical access to a locked workstation could invoke certain keyboard shortcuts, and potentially other actions.
CVSS metrics
8 scores · 5 sources · 3 versionsMedium 4.3Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:LSourcesAll 3 agree
- OSV · DebianEcosystem advisory · calculated4.3MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- NVDNIST4.3MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Medium 4.8Preferred score · CVE.org (CNA)
CVSS:3.0/AV:P/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:LSources4 sources · 4.3–4.8
- OSV · Red hatEcosystem advisory · calculated4.8MediumCVSS:3.0/AV:P/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
- OSV · UbuntuEcosystem advisory · calculated4.3MediumCVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:LDiffers
- NVDNIST4.8MediumCVSS:3.0/AV:P/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Medium 4.6Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
0.50%
Chance of exploitation in the next 30 days
Percentile
41%
Versus all other CVEs
30-day change
0.00 pp
From 0.50% on 19-09-2026
19-09-202619-10-2026
EPSS score0.50%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugzilla.redhat.com)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-285Improper AuthorizationThe product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected systems
Redhat92 products
- accountsservice< 0:0.6.50-7.el7
- accountsservice-debuginfo< 0:0.6.50-7.el7
- accountsservice-devel< 0:0.6.50-7.el7
- accountsservice-libs< 0:0.6.50-7.el7
- colord< 0:1.3.4-2.el7
Suse14 products
- gnome-shell&distro=SUSE Linux Enterprise Desktop 12 SP3< 3.20.4-77.23.1
- gnome-shell&distro=SUSE Linux Enterprise Desktop 12 SP4< 3.20.4-77.23.1
- gnome-shell&distro=SUSE Linux Enterprise Module for Desktop Applications 15< 3.26.2+20180130.0d9c74212-4.19.2
- gnome-shell&distro=SUSE Linux Enterprise Module for Desktop Applications 15 SP1< 3.26.2+20180130.0d9c74212-4.19.2
- gnome-shell&distro=SUSE Linux Enterprise Server 12 SP3< 3.20.4-77.23.1
Opensuse3 products
- leapEOL15.0 | 15.1 | 42.3
- gnome-shell&distro=openSUSE Leap 15.0< 3.26.2+20180130.0d9c74212-lp151.7.3.1
- gnome-shell&distro=openSUSE Leap 15.1< 3.26.2+20180130.0d9c74212-lp151.7.3.1
Canonical1 product
- ubuntu_linuxEOL18.04 | 18.10
Debian1 product
- gnome-shell< 3.30.2-3
Gnome1 product
- gnome-shell≥ 3.15.91, < 3.30.3 | ≥ 3.31.0, < 3.31.5
The gnome project1 product
- gnome-shellsince 3.15.91
Ubuntu1 product
- gnome-shell< 3.18.5-0ubuntu0.3+esm1 | < 3.28.3+git20190124-0ubuntu18.04.2
8 vendors · 114 products
References
64 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3820X Refsource CONFIRMExploitIssue TrackingThird Party Advisory
- gitlab.gnome.org/GNOME/gnome-shell/issues/851X Refsource MISCARTICLEIssue TrackingPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00023.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00049.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
Show all 64 references
- lists.opensuse.org/archives/…Advisory