| Name | CVE-2017-15710 |
| Description | In 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. |
| 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-1389-1, DSA-4164-1 |
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) | 2.4.59-1~deb11u1 | fixed | |
| bookworm | 2.4.57-2 | fixed | |
| bookworm (security) | 2.4.59-1~deb12u1 | 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 | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| apache2 | source | wheezy | 2.2.22-13+deb7u13 | DLA-1389-1 | ||
| apache2 | source | jessie | 2.4.10-10+deb8u12 | DSA-4164-1 | ||
| apache2 | source | stretch | 2.4.25-3+deb9u4 | DSA-4164-1 | ||
| apache2 | source | (unstable) | 2.4.33-1 |
https://www.openwall.com/lists/oss-security/2018/03/24/8