| Name | CVE-2018-5710 |
| Description | An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. The pre-defined function "strlen" is getting a "NULL" string as a parameter value in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in the Key Distribution Center (KDC), which allows remote authenticated users to cause a denial of service (NULL pointer dereference) via a modified kadmin client. |
| 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-1643-1, DLA-2771-1 |
| Debian Bugs | 889685 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| krb5 (PTS) | jessie, jessie (lts) | 1.12.1+dfsg-19+deb8u8 | fixed |
| stretch (security) | 1.15-1+deb9u3 | fixed |
| stretch (lts), stretch | 1.15-1+deb9u5 | fixed |
| buster | 1.17-3+deb10u4 | fixed |
| buster (security) | 1.17-3+deb10u6 | fixed |
| bullseye | 1.18.3-6+deb11u4 | fixed |
| bullseye (security) | 1.18.3-6+deb11u3 | fixed |
| bookworm | 1.20.1-2+deb12u1 | fixed |
| trixie | 1.20.1-5 | fixed |
| sid | 1.20.1-6 | fixed |
The information below is based on the following data on fixed versions.
Notes
[wheezy] - krb5 <not-affected> (all strlen() parameters are checked for NULL)
https://github.com/poojamnit/Kerberos-V5-1.16-Vulnerabilities/tree/master/Denial%20Of%20Service(DoS)
The CVE is a duplicate of the #891869 issue(s) due to reporter not
having coordinated with upstream and the CVE assignment ist sill for
slight different coverage. Thus keep it distinct (for now) and mark
CVE-2018-5710 issue as well as fixed once #891869 is adressed.
The duplicated ids are CVE-2018-5729 and CVE-2018-5730.