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Debian DSA-844-1 : mod-auth-shadow - programming error

high Nessus Plugin ID 19848

Synopsis

The remote Debian host is missing a security-related update.

Description

A vulnerability in mod_auth_shadow, an Apache module that lets users perform HTTP authentication against /etc/shadow, has been discovered.
The module runs for all locations that use the 'require group' directive which would bypass access restrictions controlled by another authorisation mechanism, such as AuthGroupFile file, if the username is listed in the password file and in the gshadow file in the proper group and the supplied password matches against the one in the shadow file.

This update requires an explicit 'AuthShadow on' statement if website authentication should be checked against /etc/shadow.

Solution

Upgrade the libapache-mod-auth-shadow package.

For the old stable distribution (woody) this problem has been fixed in version 1.3-3.1woody.2.

For the stable distribution (sarge) this problem has been fixed in version 1.4-1sarge1.

See Also

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=323789

http://www.debian.org/security/2005/dsa-844

Plugin Details

Severity: High

ID: 19848

File Name: debian_DSA-844.nasl

Version: 1.18

Type: local

Agent: unix

Published: 10/5/2005

Updated: 1/4/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

CVSS v2

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:mod-auth-shadow, cpe:/o:debian:debian_linux:3.1, cpe:/o:debian:debian_linux:3.0

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

Patch Publication Date: 10/5/2005

Vulnerability Publication Date: 10/5/2005

Reference Information

CVE: CVE-2005-2963

DSA: 844