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, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1028-1, DSA-3913-1
NVD severitymedium (attack range: remote)
Debian Bugs868467

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
apache2 (PTS)wheezy2.2.22-13+deb7u6vulnerable
wheezy (security)2.2.22-13+deb7u11fixed
jessie2.4.10-10+deb8u9vulnerable
jessie (security)2.4.10-10+deb8u10fixed
stretch2.4.25-3+deb9u1vulnerable
stretch (security)2.4.25-3+deb9u2fixed
buster, sid2.4.27-5fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
apache2source(unstable)2.4.27-1medium868467
apache2sourcejessie2.4.10-10+deb8u10mediumDSA-3913-1
apache2sourcestretch2.4.25-3+deb9u2mediumDSA-3913-1
apache2sourcewheezy2.2.22-13+deb7u10mediumDLA-1028-1

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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