| Name | CVE-2016-4574 |
| Description | Off-by-one error in the append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read) via invalid utf-8 encoded data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-4356. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libksba (PTS) | jessie, jessie (lts) | 1.3.2-1+deb8u3 | fixed |
| stretch (lts), stretch | 1.3.5-2+deb9u2 | fixed |
| buster (security), buster, buster (lts) | 1.3.5-2+deb10u2 | fixed |
| bullseye (security), bullseye | 1.5.0-3+deb11u2 | fixed |
| bookworm | 1.6.3-2 | fixed |
| sid, trixie | 1.6.7-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libksba | source | wheezy | (not affected) | | | |
| libksba | source | jessie | (not affected) | | | |
| libksba | source | (unstable) | 1.3.4-3 | | | |
Notes
[jessie] - libksba <not-affected> (Incomplete fix not applied)
[wheezy] - libksba <not-affected> (Incomplete fix not applied)
Fixed by: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=6be61daac047d8e6aa941eb103f8e71a1d4e3c75
Introduced by: http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=243d12fdec66a4360fbb3e307a046b39b5b4ffc3