USN-3813-1: pyOpenSSL vulnerabilities

8 November 2018

pyopenssl vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in pyOpenSSL.

Software Description

  • pyopenssl - Python wrapper around the OpenSSL library

Details

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)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04 LTS
python-openssl - 0.15.1-2ubuntu0.2
python3-openssl - 0.15.1-2ubuntu0.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References