SB2015091102 - Input validation error in OpenLDAP

Description

This security bulletin contains information about 1 vulnerability.

1) Input validation error (CVE-ID: CVE-2015-6908)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 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

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The ber_get_next function in libraries/liblber/io.c in OpenLDAP 2.4.42 and earlier allows remote attackers to cause a denial of service (reachable assertion and application crash) via crafted BER data, as demonstrated by an attack against slapd.

Remediation

Install update from vendor's website.

References

• http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html
• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00031.html
• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00032.html
• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00037.html
• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00039.html
• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00040.html
• http://rhn.redhat.com/errata/RHSA-2015-1840.html
• http://www.debian.org/security/2015/dsa-3356
• http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commit;h=6fe51a9ab04fd28bbc171da3cf12f1c1040d6629
• http://www.openldap.org/its/index.cgi/Software%20Bugs?id=8240
• http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
• http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
• http://www.security-assessment.com/files/documents/advisory/OpenLDAP-ber_get_next-Denial-of-Service.pdf
• http://www.securityfocus.com/bid/76714
• http://www.securitytracker.com/id/1033534
• http://www.ubuntu.com/usn/USN-2742-1
• https://support.apple.com/HT205637