FreeBSD : libtasn1 -- ASN.1 length decoding vulnerability (2e7e9072-73a0-11e1-a883-001cc0a36e12)

Medium Nessus Plugin ID 58422


The remote FreeBSD host is missing one or more security-related updates.


Mu Dynamics, Inc. reports :

Various functions using the ASN.1 length decoding logic in Libtasn1 were incorrectly assuming that the return value from asn1_get_length_der is always less than the length of the enclosing ASN.1 structure, which is only true for valid structures and not for intentionally corrupt or otherwise buggy structures.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 58422

File Name: freebsd_pkg_2e7e907273a011e1a883001cc0a36e12.nasl

Version: $Revision: 1.4 $

Type: local

Published: 2012/03/22

Modified: 2013/06/21

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:gnutls, p-cpe:/a:freebsd:freebsd:gnutls-devel, p-cpe:/a:freebsd:freebsd:libtasn1, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 2012/03/21

Vulnerability Publication Date: 2012/03/20

Reference Information

CVE: CVE-2012-1569