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TI-2018-14559 Aliases CVE-2018-20534GHSA-qghc-5fvm-f36w

There is an illegal address access at ext/testcase.c in libsolv.a in libsolv through…

Priority LOW 33CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

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

Why it matters now

EPSS 0.02239 82nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:opensuse:libsolv:*:*:*:*:*:*:*:*up to 0.7.2VulnerableopenSUSE
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*18.10VulnerableCanonical
  • cpe:2.3:a:opensuse:libsolv:*:*:*:*:*:*:*:* Versions up to 0.7.2 Vulnerable ·openSUSE
  • cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical

Remediation

Red Hat 2 advisories

  • RHSA-2019:3583 Released 2019-11-05 · Red Hat rating Moderate
    yum security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) createrepo_c-0.11.0-3.el8, createrepo_c-devel-0.11.0-3.el8, createrepo_c-libs-0.11.0-3.el8 +1
    • Red Hat Enterprise Linux BaseOS (v. 8) dnf-4.2.7-6.el8, dnf-automatic-4.2.7-6.el8, dnf-data-4.2.7-6.el8 +17
  • RHSA-2019:2290 Released 2019-08-06 · Red Hat rating Low
    libsolv security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) libsolv-0.6.34-4.el7
    • Red Hat Enterprise Linux Client Optional (v. 7) libsolv-demo-0.6.34-4.el7, libsolv-devel-0.6.34-4.el7, libsolv-tools-0.6.34-4.el7 +1
    • Red Hat Enterprise Linux ComputeNode (v. 7) libsolv-0.6.34-4.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) libsolv-demo-0.6.34-4.el7, libsolv-devel-0.6.34-4.el7, libsolv-tools-0.6.34-4.el7 +1
    • Red Hat Enterprise Linux Server (v. 7) libsolv-0.6.34-4.el7, libsolv-0.6.34-4.el7.ppc
    • Red Hat Enterprise Linux Server Optional (v. 7) libsolv-demo-0.6.34-4.el7, libsolv-devel-0.6.34-4.el7, libsolv-devel-0.6.34-4.el7.ppc +3
    • Red Hat Enterprise Linux Workstation (v. 7) libsolv-0.6.34-4.el7
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libsolv-demo-0.6.34-4.el7, libsolv-devel-0.6.34-4.el7, libsolv-tools-0.6.34-4.el7 +1

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2019:3583
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2019:3583
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2019:2290
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:2290
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2019:2290
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2019:2290
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:2290
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:2290
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:2290
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:2290

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-20534
  2. 2026-10-03 Alias added: GHSA-qghc-5fvm-f36w

References

Exploit 1

Patch 1

Advisory 5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences