CVE-2020-14346: canonical ubuntu_linux Integer Underflow (Wrap or Wraparound)
CVSS: 7.8v3.1HighModified
AliasesALPINE-CVE-2020-14346UBUNTU-CVE-2020-14346DEBIAN-CVE-2020-14346
Published 15-09-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-14346 is a high (CVSS 7.8) Integer Underflow (Wrap or Wraparound) vulnerability in canonical ubuntu_linux. EPSS estimates a 0.63% chance of exploitation in the next 30 days, higher than 49.1% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
0.63%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 17 · Related 11Timeline
- 15-09-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in xorg-x11-server before 1.20.9. An integer underflow in the X input extension protocol decoding in the X server may lead to arbitrary access of memory contents. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Medium 4.6Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
0.63%
Chance of exploitation in the next 30 days
Percentile
49%
Versus all other CVEs
30-day change
0.00 pp
From 0.63% on 19-09-2026
19-09-202619-10-2026
EPSS score0.63%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu3 products
- xorg-server< 2:1.15.1-0ubuntu2.11+esm2 | < 2:1.18.4-0ubuntu0.9 | < 2:1.19.6-1ubuntu4.5 | < 2:1.20.8-2ubuntu2.3
- xorg-server-hwe-16.04< 2:1.19.6-1ubuntu4.1~16.04.3
- xorg-server-hwe-18.04< 2:1.20.8-2ubuntu2.2~18.04.2
Alpine1 product
- xorg-server< 1.20.5-r2 | < 1.20.6-r2 | < 1.20.9-r0 | < 1.20.3-r2
Canonical1 product
- ubuntu_linuxEOL14.04
Debian1 product
- xorg-server< 2:1.20.9-1
Redhat1 product
- enterprise_linuxEOL6.0 | 7.0 | 8.0
X.org1 product
- x_server< 1.20.9
6 vendors · 8 products
