Input validation error in Samba - CVE-2015-3223
Published: December 30, 2015 / Updated: August 4, 2020
Vulnerability identifier: #VU33812
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-3223
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The ldb_wildcard_compare function in ldb_match.c in ldb before 1.1.24, as used in the AD LDAP server in Samba 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3, mishandles certain zero values, which allows remote attackers to cause a denial of service (infinite loop) via crafted packets.
Affected software
Samba
Amazon Linux AMI
SUSE Linux
Opensuse
ldb (Alpine package)
samba (Alpine package)
Amazon Linux AMI
SUSE Linux
Opensuse
ldb (Alpine package)
samba (Alpine package)
How to mitigate CVE-2015-3223
Install update from vendor's website.
Samba - update to 4.1.22
ldb (Alpine package) - update to 1.1.24-r0
samba (Alpine package) - update to 4.2.7-r0
ldb (Alpine package) - update to 1.1.24-r0
samba (Alpine package) - update to 4.2.7-r0
External References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174076.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174391.html
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00019.html
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00032.html
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00033.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html
- http://www.debian.org/security/2016/dsa-3433
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.securityfocus.com/bid/79731
- http://www.securitytracker.com/id/1034493
- http://www.ubuntu.com/usn/USN-2855-1
- http://www.ubuntu.com/usn/USN-2855-2
- http://www.ubuntu.com/usn/USN-2856-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1290287
- https://git.samba.org/?p=samba.git;a=commit;h=aa6c27148b9d3f8c1e4fdd5dd46bfecbbd0ca465
- https://git.samba.org/?p=samba.git;a=commit;h=ec504dbf69636a554add1f3d5703dd6c3ad450b8
- https://security.gentoo.org/glsa/201612-47
- https://www.samba.org/samba/security/CVE-2015-3223.html
Related Security Bulletins
- Input validation error in Samba
- OpenSUSE Linux update for ldb, samba, talloc, tdb, tevent
- SUSE Linux update for ldb, samba, talloc, tdb, tevent
- SUSE Linux update for ldb, samba, talloc, tdb, tevent
- Input validation error in samba (Alpine package)
- Input validation error in ldb (Alpine package)
- Amazon Linux AMI update for libldb