Input validation error in Samba - CVE-2015-3223
Published: December 30, 2015 / Updated: August 4, 2020
Vulnerability identifier: #VU33812
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2015-3223
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Samba
Affected software:
Samba
Samba
Detailed vulnerability description
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.
How to mitigate CVE-2015-3223
Install update from vendor's website.
Sources
- 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