FreeBSD : openssl -- TLS extension parsing race condition (3042c33a-f237-11df-9d02-0018fe623f2b)

High Nessus Plugin ID 50627


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


OpenSSL Team reports :

Rob Hulswit has found a flaw in the OpenSSL TLS server extension code parsing which on affected servers can be exploited in a buffer overrun attack.

Any OpenSSL based TLS server is vulnerable if it is multi-threaded and uses OpenSSL's internal caching mechanism. Servers that are multi-process and/or disable internal session caching are NOT affected.

In particular the Apache HTTP server (which never uses OpenSSL internal caching) and Stunnel (which includes its own workaround) are NOT affected.


Update the affected package.

See Also

Plugin Details

Severity: High

ID: 50627

File Name: freebsd_pkg_3042c33af23711df9d020018fe623f2b.nasl

Version: $Revision: 1.9 $

Type: local

Published: 2010/11/18

Modified: 2015/09/02

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.6

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:openssl, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 2010/11/17

Vulnerability Publication Date: 2010/10/08

Reference Information

CVE: CVE-2010-3864