Ubuntu 10.04 LTS : puppet regression (USN-1223-2)

medium Nessus Plugin ID 56406

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Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

USN-1223-1 fixed vulnerabilities in Puppet. A regression was found on Ubuntu 10.04 LTS that caused permission denied errors when managing SSH authorized_keys files with Puppet. This update fixes the problem.

We apologize for the inconvenience.

It was discovered that Puppet unsafely opened files when the k5login type is used to manage files. A local attacker could exploit this to overwrite arbitrary files which could be used to escalate privileges.
(CVE-2011-3869)

Ricky Zhou discovered that Puppet did not drop privileges when creating SSH authorized_keys files. A local attacker could exploit this to overwrite arbitrary files as root.
(CVE-2011-3870)

It was discovered that Puppet used a predictable filename when using the --edit resource. A local attacker could exploit this to edit arbitrary files or run arbitrary code as the user invoking the program, typically root.
(CVE-2011-3871).

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 puppet-common package.

Plugin Details

Severity: Medium

ID: 56406

File Name: ubuntu_USN-1223-2.nasl

Version: 1.9

Type: local

Agent: unix

Family: Ubuntu Local Security Checks

Published: 10/6/2011

Updated: 9/19/2019

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: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.3

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:puppet-common, cpe:/o:canonical:ubuntu_linux:10.04:-:lts

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

Patch Publication Date: 10/5/2011

Vulnerability Publication Date: 10/27/2011

Reference Information

CVE: CVE-2011-3869, CVE-2011-3870, CVE-2011-3871

USN: 1223-2

Detections

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