Ubuntu 16.04 LTS : pyopenssl vulnerabilities (USN-3813-1)

High Nessus Plugin ID 118855

Synopsis

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

Description

It was discovered that pyOpenSSL incorrectly handled memory when handling X509 objects. A remote attacker could use this issue to cause pyOpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-1000807)

It was discovered that pyOpenSSL incorrectly handled memory when performing operations on a PKCS #12 store. A remote attacker could possibly use this issue to cause pyOpenSSL to consume resources, resulting in a denial of service. (CVE-2018-1000808).

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/3813-1/

Plugin Details

Severity: High

ID: 118855

File Name: ubuntu_USN-3813-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2018/11/09

Modified: 2018/11/13

Dependencies: 12634

Risk Information

Risk Factor: High

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:python-openssl, p-cpe:/a:canonical:ubuntu_linux:python3-openssl, cpe:/o:canonical:ubuntu_linux:16.04

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

Patch Publication Date: 2018/11/08

Reference Information

CVE: CVE-2018-1000807, CVE-2018-1000808

USN: 3813-1