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Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.10 : sudo vulnerabilities (USN-2146-1)

medium Nessus Plugin ID 73016

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Synopsis

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

Description

Sebastien Macke discovered that Sudo incorrectly handled blacklisted environment variables when the env_reset option was disabled. A local attacker could use this issue to possibly run unintended commands by using blacklisted environment variables. In a default Ubuntu installation, the env_reset option is enabled by default. This issue only affected Ubuntu 10.04 LTS and Ubuntu 12.04 LTS. (CVE-2014-0106)

It was discovered that the Sudo init script set a date in the past on existing timestamp files instead of using epoch to invalidate them completely. A local attacker could possibly modify the system time to attempt to reuse timestamp files. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 12.10 and Ubuntu 13.10. (LP: #1223297).

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

Solution

Update the affected sudo and / or sudo-ldap packages.

See Also

https://usn.ubuntu.com/2146-1/

Plugin Details

Severity: Medium

ID: 73016

File Name: ubuntu_USN-2146-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 3/14/2014

Updated: 1/19/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 5.5

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:10.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:sudo, cpe:/o:canonical:ubuntu_linux:12.10, cpe:/o:canonical:ubuntu_linux:13.10, p-cpe:/a:canonical:ubuntu_linux:sudo-ldap, cpe:/o:canonical:ubuntu_linux:12.04:-:lts

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/13/2014

Vulnerability Publication Date: 3/11/2014

Exploitable With

Core Impact

Reference Information

CVE: CVE-2014-0106

BID: 65997

USN: 2146-1