CVE-2016-0736

Name	CVE-2016-0736
Description	In Apache HTTP Server versions 2.4.0 to 2.4.23, mod_session_crypto was encrypting its data/cookie using the configured ciphers with possibly either CBC or ECB modes of operation (AES256-CBC by default), hence no selectable or builtin authenticated encryption. This made it vulnerable to padding oracle attacks, particularly with CBC.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DSA-3796-1
NVD severity	medium

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
apache2 (PTS)	stretch (security), stretch	2.4.25-3+deb9u9	fixed
	buster, buster (security)	2.4.38-3+deb10u4	fixed
	bullseye, sid	2.4.46-4	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
apache2	source	wheezy	(not affected)
apache2	source	jessie	2.4.10-10+deb8u8	DSA-3796-1
apache2	source	(unstable)	2.4.25-1

Notes

[wheezy] - apache2 <not-affected> (Vulnerable code not present)
https://lists.apache.org/thread.html/139862b41c0dfd5e6e00ad89c00119f9faf0dd41a2f927da9c9a4076@%3Cannounce.httpd.apache.org%3E
Fixed by: https://svn.apache.org/r1772812
Affects: 2.4.1 to 2.4.23
Fixed in 2.4.25