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GLSA-202210-38 : Expat: Denial of Service

high Nessus Plugin ID 166742

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Description

The remote host is affected by the vulnerability described in GLSA-202210-38 (Expat: Denial of Service)

 - In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations. (CVE-2022-43680)

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

Solution

All Expat users should upgrade to the latest version:

 # emerge --sync # emerge --ask --oneshot --verbose >=dev-libs/expat-2.5.0

See Also

https://security.gentoo.org/glsa/202210-38

https://bugs.gentoo.org/show_bug.cgi?id=878271

Plugin Details

Severity: High

ID: 166742

File Name: gentoo_GLSA-202210-38.nasl

Version: 1.3

Type: local

Published: 10/31/2022

Updated: 10/6/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2022-43680

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:expat, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/31/2022

Vulnerability Publication Date: 10/24/2022

Reference Information

CVE: CVE-2022-43680