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AUSCERT External Security Bulletin Redistribution
pyOpenSSL vulnerabilities patched in Ubuntu
9 November 2018
AusCERT Security Bulletin Summary
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
CVE Names: CVE-2018-1000808 CVE-2018-1000807
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running pyOpenSSL check for an updated version of the software for
their operating system.
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Ubuntu Security Notice USN-3813-1
November 08, 2018
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 16.04 LTS
Several security issues were fixed in pyOpenSSL.
- - pyopenssl: Python wrapper around the OpenSSL library
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
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
The problem can be corrected by updating your system to the following
Ubuntu 16.04 LTS:
In general, a standard system update will make all the necessary changes.
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