Mandriva Linux Security Advisory : libesmtp (MDVSA-2010:195)

Medium Nessus Plugin ID 49742


The remote Mandriva Linux host is missing one or more security updates.


Multiple vulnerabilities has been found and corrected in libesmtp :

libESMTP, probably 1.0.4 and earlier, does not properly handle a \'\0\' (NUL) 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, a related issue to CVE-2009-2408 (CVE-2010-1192).

The match_component function in smtp-tls.c in libESMTP 1.0.3.r1, and possibly other versions including 1.0.4, treats two strings as equal if one is a substring of the other, which allows remote attackers to spoof trusted certificates via a crafted subjectAltName (CVE-2010-1194).

Packages for 2008.0 and 2009.0 are provided as of the Extended Maintenance Program. Please visit this link to learn more: 90

The updated packages have been patched to correct these issues.


Update the affected packages.

Plugin Details

Severity: Medium

ID: 49742

File Name: mandriva_MDVSA-2010-195.nasl

Version: $Revision: 1.10 $

Type: local

Published: 2010/10/06

Modified: 2013/06/01

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.8

Temporal Score: 5.6

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:mandriva:linux:lib64esmtp-devel, p-cpe:/a:mandriva:linux:lib64esmtp5, p-cpe:/a:mandriva:linux:lib64esmtp5-devel, p-cpe:/a:mandriva:linux:libesmtp-devel, p-cpe:/a:mandriva:linux:libesmtp5, p-cpe:/a:mandriva:linux:libesmtp5-devel, cpe:/o:mandriva:linux:2008.0, cpe:/o:mandriva:linux:2009.0, cpe:/o:mandriva:linux:2009.1, cpe:/o:mandriva:linux:2010.0, cpe:/o:mandriva:linux:2010.1

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Mandrake/release, Host/Mandrake/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2010/10/04

Reference Information

CVE: CVE-2010-1192, CVE-2010-1194

BID: 38528, 38538

MDVSA: 2010:195