Debian DLA-63-1 : bash security update

critical Nessus Plugin ID 82208

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Synopsis

The remote Debian host is missing a security update.

Description

Tavis Ormandy discovered that the patch applied to fix CVE-2014-6271 released in DSA-3032-1 for bash, the GNU Bourne-Again Shell, was incomplete and could still allow some characters to be injected into another environment (CVE-2014-7169). With this update prefix and suffix for environment variable names which contain shell functions are added as hardening measure.

Additionally two out-of-bounds array accesses in the bash parser are fixed which were revealed in Red Hat's internal analysis for these issues and also independently reported by Todd Sabin.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

Plugin Details

Severity: Critical

ID: 82208

File Name: debian_DLA-63.nasl

Version: 1.14

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 3/26/2015

Updated: 1/31/2022

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.0

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:bash-static, cpe:/o:debian:debian_linux:6.0, p-cpe:/a:debian:debian_linux:bash-builtins, p-cpe:/a:debian:debian_linux:bash-doc, p-cpe:/a:debian:debian_linux:bash

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/25/2014

CISA Known Exploited Vulnerability Due Dates: 7/28/2022

Reference Information

CVE: CVE-2014-7169

BID: 70137

Detections

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