| 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, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 889685 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| krb5 (PTS) | buster | 1.17-3+deb10u4 | fixed |
| buster (security) | 1.17-3+deb10u2 | fixed |
| bullseye | 1.18.3-6+deb11u2 | fixed |
| bookworm, sid | 1.20-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| krb5 | source | wheezy | (not affected) | | | |
| krb5 | source | (unstable) | 1.16.1-1 | | | 889685 |
Notes
[stretch] - krb5 <no-dsa> (Minor issue)
[jessie] - krb5 <no-dsa> (Minor issue)
[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.