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Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.04 : pyopenssl vulnerability (USN-1965-1)

medium Nessus Plugin ID 70087

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Synopsis

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

Description

It was discovered that pyOpenSSL did not properly handle certificates with NULL characters in the Subject Alternative Name field. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications.

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 python-openssl and / or python3-openssl packages.

See Also

https://usn.ubuntu.com/1965-1/

Plugin Details

Severity: Medium

ID: 70087

File Name: ubuntu_USN-1965-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 9/24/2013

Updated: 9/19/2019

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

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:python-openssl, p-cpe:/a:canonical:ubuntu_linux:python3-openssl, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:12.10, cpe:/o:canonical:ubuntu_linux:13.04

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/23/2013

Vulnerability Publication Date: 9/30/2013

Reference Information

CVE: CVE-2013-4314

BID: 62258

USN: 1965-1