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Ubuntu 16.04 ESM / 18.04 ESM : Libsolv vulnerabilities (USN-4851-1)

medium Nessus Plugin ID 183114

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 ESM / 18.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4851-1 advisory.

 - 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. (CVE-2018-20532)

 - There is a NULL pointer dereference at ext/testcase.c (function testcase_str2dep_complex) in libsolvext.a in libsolv through 0.7.2 that will cause a denial of service. (CVE-2018-20533)

 - ** DISPUTED ** 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.
 (CVE-2018-20534)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-4851-1

Plugin Details

Severity: Medium

ID: 183114

File Name: ubuntu_USN-4851-1.nasl

Version: 1.0

Type: local

Agent: unix

Published: 10/16/2023

Updated: 10/16/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2018-20534

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:esm, cpe:/o:canonical:ubuntu_linux:18.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:libsolv-perl, p-cpe:/a:canonical:ubuntu_linux:libsolv-tools, p-cpe:/a:canonical:ubuntu_linux:libsolv0, p-cpe:/a:canonical:ubuntu_linux:libsolv0-dev, p-cpe:/a:canonical:ubuntu_linux:libsolvext0, p-cpe:/a:canonical:ubuntu_linux:libsolvext0-dev, p-cpe:/a:canonical:ubuntu_linux:python-solv, p-cpe:/a:canonical:ubuntu_linux:python3-solv

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/15/2021

Vulnerability Publication Date: 12/28/2018

Reference Information

CVE: CVE-2018-20532, CVE-2018-20533, CVE-2018-20534

USN: 4851-1