SB2015123011 - Input validation error in Samba
Published: December 30, 2015 Updated: August 4, 2020
Security Bulletin ID
SB2015123011
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2015-3223)
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.
Remediation
Install update from vendor's website.
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