CVE-2012-1569

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2012-03-26 · updated 2026-06-16
Weakness: CWE-189

Description

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.

Affected products

[UNKNOWN] gnutls: through 3.0.15; 1.0.16, 1.0.17, 1.0.18, 1.0.19, 1.0.20, 1.0.21 (+160)
GnuTLS libtasn1: through 2.11; 0.1.0, 0.1.1, 0.1.2, 0.2.0, 0.2.1, 0.2.2 (+47)

References

http://archives.neohapsis.com/archives/bugtraq/2012-03/0099.html
http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/5932
http://article.gmane.org/gmane.comp.gnu.libtasn1.general/53
http://article.gmane.org/gmane.comp.gnu.libtasn1.general/54
http://blog.mudynamics.com/2012/03/20/gnutls-and-libtasn1-vulns/
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://lists.fedoraproject.org/pipermail/package-announce/2012-April/077284.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077339.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-April/078207.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-March/076699.html

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