CVE-2017-9788

NameCVE-2017-9788
DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1028-1, DSA-3913-1
NVD severitymedium
Debian Bugs868467

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
apache2 (PTS)stretch2.4.25-3+deb9u9fixed
stretch (security)2.4.25-3+deb9u11fixed
buster2.4.38-3+deb10u5fixed
buster (security)2.4.38-3+deb10u6fixed
bullseye2.4.48-3.1+deb11u1fixed
bullseye (security)2.4.51-1~deb11u1fixed
bookworm, sid2.4.51-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
apache2sourcewheezy2.2.22-13+deb7u10DLA-1028-1
apache2sourcejessie2.4.10-10+deb8u10DSA-3913-1
apache2sourcestretch2.4.25-3+deb9u2DSA-3913-1
apache2source(unstable)2.4.27-1868467

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

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