Debian DSA-1943-1 : openldap openldap2.3 - insufficient input validation

Medium Nessus Plugin ID 44808

Synopsis

The remote Debian host is missing a security-related update.

Description

It was discovered that OpenLDAP, a free implementation of the Lightweight Directory Access Protocol, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.

Solution

Upgrade the openldap2.3/openldap packages.

For the oldstable distribution (etch), this problem has been fixed in version 2.3.30-5+etch3 for openldap2.3.

For the stable distribution (lenny), this problem has been fixed in version 2.4.11-1+lenny1 for openldap.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=553432

https://www.debian.org/security/2009/dsa-1943

Plugin Details

Severity: Medium

ID: 44808

File Name: debian_DSA-1943.nasl

Version: 1.14

Type: local

Agent: unix

Published: 2010/02/24

Updated: 2019/08/02

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:openldap, p-cpe:/a:debian:debian_linux:openldap2.3, cpe:/o:debian:debian_linux:4.0, cpe:/o:debian:debian_linux:5.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 2009/12/02

Reference Information

CVE: CVE-2009-3767

DSA: 1943

CWE: 310