CVE-2017-15710

NameCVE-2017-15710
DescriptionIn Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all.
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-1389-1, DSA-4164-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
apache2 (PTS)jessie2.4.10-10+deb8u12fixed
jessie (security)2.4.10-10+deb8u16fixed
stretch2.4.25-3+deb9u8fixed
stretch (security)2.4.25-3+deb9u9fixed
buster, buster (security)2.4.38-3+deb10u3fixed
bullseye, sid2.4.41-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
apache2source(unstable)2.4.33-1
apache2sourcejessie2.4.10-10+deb8u12DSA-4164-1
apache2sourcestretch2.4.25-3+deb9u4DSA-4164-1
apache2sourcewheezy2.2.22-13+deb7u13DLA-1389-1

Notes

http://www.openwall.com/lists/oss-security/2018/03/24/8

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