GLSA-200501-02 : a2ps: Multiple vulnerabilities

critical Nessus Plugin ID 16393

Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-200501-02 (a2ps: Multiple vulnerabilities)

Javier Fernandez-Sanguino Pena discovered that the a2ps package contains two scripts that create insecure temporary files (fixps and psmandup). Furthermore, we fixed in a previous revision a vulnerability in a2ps filename handling (CAN-2004-1170).
Impact :

A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When fixps or psmandup is executed, this would result in the file being overwritten with the rights of the user running the utility. By enticing a user or script to run a2ps on a malicious filename, an attacker could execute arbitrary commands on the system with the rights of that user or script.
Workaround :

There is no known workaround at this time.

Solution

All a2ps users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-text/a2ps-4.13c-r2'

Plugin Details

Severity: Critical

ID: 16393

File Name: gentoo_GLSA-200501-02.nasl

Version: 1.20

Type: local

Family: Gentoo Local Security Checks

Published: 2/14/2005

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:a2ps, cpe:/o:gentoo:linux

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

Patch Publication Date: 1/4/2005

Reference Information

CVE: CVE-2004-1170, CVE-2004-1377

GLSA: 200501-02

Detections

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