USN-3199-3: Python Crypto vulnerability
28 August 2017
Programs using the Python Cryptography Toolkit could be made to crash or run programs if they receive specially crafted network traffic or other input.
Releases
Packages
- python-crypto - cryptographic algorithms and protocols for Python
Details
USN-3199-1 fixed a vulnerability in Python Crypto. This update
provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
It was discovered that the ALGnew function in block_templace.c in the Python
Cryptography Toolkit contained a heap-based buffer overflow vulnerability.
A remote attacker could use this flaw to execute arbitrary code by using
a crafted initialization vector parameter.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 12.04
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-3199-2: python-crypto-doc, python3-crypto, python-crypto
- USN-3199-1: python-crypto-doc, python3-crypto, python-crypto