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CVE-2018-20532

Published: 28 December 2018

There is a NULL pointer dereference at ext/testcase.c (function testcase_read) in libsolvext.a in libsolv through 0.7.2 that will cause a denial of service.

From the Ubuntu Security Team

It was discovered that libsolv incorrectly handled certain malformed input. An attacker could use this issue to cause libsolv to crash, resulting in a denial of service.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
libsolv
Launchpad, Ubuntu, Debian
trusty Does not exist

cosmic
Released (0.6.35-2ubuntu0.18.10.1)
disco
Released (0.6.5-2ubuntu1)
eoan
Released (0.6.5-2ubuntu1)
focal
Released (0.6.5-2ubuntu1)
impish
Released (0.6.5-2ubuntu1)
groovy
Released (0.6.5-2ubuntu1)
hirsute
Released (0.6.5-2ubuntu1)
jammy
Released (0.6.5-2ubuntu1)
upstream
Released (0.7.3)
kinetic
Released (0.6.5-2ubuntu1)
xenial
Released (0.6.11-1.1ubuntu0.1~esm1)
bionic
Released (0.6.30-1ubuntu0.1~esm1)
lunar
Released (0.6.5-2ubuntu1)
Patches:
upstream: https://github.com/openSUSE/libsolv/commit/4830af9d979d3685de538b80fbeba51ad590525e

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H