CVE-2021-3671

Name
CVE-2021-3671
Description
A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://bugzilla.samba.org/show_bug.cgi?id=14770,
MISC https://bugzilla.redhat.com/show_bug.cgi?id=2013080,
MISC https://github.com/heimdal/heimdal/commit/04171147948d0a3636bc6374181926f0fb2ec83a

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* samba >= None < 4.13.12
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* samba >= 4.14.0 < 4.14.8

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
samba 3.12-main 4.12.15-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
samba 3.11-main 4.11.16-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
heimdal 3.16-main 7.7.1-r0 Leonardo Arena <rnalrd@alpinelinux.org> fixed
heimdal 3.15-main 7.7.1-r0 Leonardo Arena <rnalrd@alpinelinux.org> fixed