CVE-2012-1569
MEDIUM severity · CVSS 5 · CWE-189
5CVSS MEDIUM
Summary
The asn1_get_length_der function in decoding.c in GNU Libtasn1 before 2.12, as used in GnuTLS before 3.0.16 and other products, does not properly handle certain large length values, which allows remote attackers to cause a denial of service (heap memory corruption and application crash) or possibly have unspecified other impact via a crafted ASN.1 structure.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impactNone
Integrity impactNone
Availability impact—
Exploit probability (EPSS)4%
AV:N/AC:L/Au:N/C:N/I:N/A:P
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/5932 ↗
Additional information
- NVD record
- http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/5932Patch
- http://archives.neohapsis.com/archives/bugtraq/2012-03/0099.html
- http://article.gmane.org/gmane.comp.gnu.libtasn1.general/53
- http://article.gmane.org/gmane.comp.gnu.libtasn1.general/54
- http://linux.oracle.com/errata/ELSA-2014-0596.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/076856.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/076865.html
- http://blog.mudynamics.com/2012/03/20/gnutls-and-libtasn1-vulns/Exploit