CVE-2018-20534: canonical ubuntu_linux
Vulnerability summary
CVE-2018-20534 is a medium (CVSS 6.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 2.24% chance of exploitation in the next 30 days, higher than 82.5% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 9 · Related 7Timeline
- 28-12-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
There is an illegal address access at ext/testcase.c in libsolv.a in libsolv through 0.7.2 that will cause a denial of service. NOTE: third parties dispute this issue stating that the issue affects the test suite and not the underlying library. It cannot be exploited in any real-world application
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
2.24%
Chance of exploitation in the next 30 days
Percentile
83%
Versus all other CVEs
30-day change
-0.09 pp
From 2.33% on 18-09-2026
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 causeAffected systems
Canonical1 product
- ubuntu_linuxEOL18.10
Debian1 product
- libsolv< 0.6.36-1
Opensuse1 product
- libsolv≤ 0.7.2
Ubuntu1 product
- libsolv< 0.6.11-1.1ubuntu0.1~esm1 | < 0.6.30-1ubuntu0.1~esm1
4 vendors · 4 products
References
12 links- bugzilla.redhat.com/show_bug.cgi?id=1652604X Refsource MISCExploitIssue TrackingThird Party AdvisoryREPORT