CVE-2017-9788

Name	CVE-2017-9788
Description	In Apache httpd before 2.2.34 and 2.4.x before 2.4.27, the value placeholder in [Proxy-]Authorization headers of type 'Digest' was not initialized or reset before or between successive key=value assignments by mod_auth_digest. Providing an initial key with no '=' assignment could reflect the stale value of uninitialized pool memory used by the prior request, leading to leakage of potentially confidential information, and a segfault in other cases resulting in denial of service.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1028-1, DSA-3913-1
Debian Bugs	868467

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
apache2 (PTS)	buster	2.4.38-3+deb10u8	fixed
	buster (security)	2.4.38-3+deb10u10	fixed
	bullseye	2.4.56-1~deb11u2	fixed
	bullseye (security)	2.4.56-1~deb11u1	fixed
	bookworm	2.4.57-2	fixed
	trixie	2.4.58-1	fixed
	sid	2.4.59-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
apache2	source	wheezy	2.2.22-13+deb7u10	DLA-1028-1
apache2	source	jessie	2.4.10-10+deb8u10	DSA-3913-1
apache2	source	stretch	2.4.25-3+deb9u2	DSA-3913-1
apache2	source	(unstable)	2.4.27-1		868467

Notes

https://httpd.apache.org/security/vulnerabilities_24.html#2.4.27
Fixed by (2.4.x): https://svn.apache.org/r1800955
2.4.x: https://github.com/apache/httpd/commit/549ba6a39aa0df78a610025f74f3a06503a70f67
trunk: https://github.com/apache/httpd/commit/c5d3719133b9e5dab0d540c5aa03b2fdabc30395