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Vulnerability record · CVE-2018-20534 · published 28 December 2018

CVE-2018-20534: Opensuse libsolv memory buffer overflow vulnerability

Opensuse · Libsolv

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

6.5 CVSS 3.0 Medium EPSS 2.3% · top 17.1% CWE-119 · Memory buffer overflow
6.5CVSS 3.0 base score, v2 4.3
2.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
14References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00057.html
https://access.redhat.com/errata/RHSA-2019:2290
https://access.redhat.com/errata/RHSA-2019:3583
https://bugzilla.redhat.com/show_bug.cgi?id=1652604 ExploitIssue TrackingThird Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1120631 Issue TrackingThird Party Advisory
https://github.com/openSUSE/libsolv/pull/291 PatchThird Party Advisory
https://usn.ubuntu.com/3916-1/ Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00057.html
https://access.redhat.com/errata/RHSA-2019:2290
https://access.redhat.com/errata/RHSA-2019:3583
https://bugzilla.redhat.com/show_bug.cgi?id=1652604 ExploitIssue TrackingThird Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1120631 Issue TrackingThird Party Advisory
https://github.com/openSUSE/libsolv/pull/291 PatchThird Party Advisory
https://usn.ubuntu.com/3916-1/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-20534), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.