CVE-2012-1569

CVE-2012-1569 is a medium-severity vulnerability in Gnu Gnutls with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-189.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.0)
• EPSS exploit prediction: 4% (90th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-189
• Affected product: Gnu Gnutls
• Published: 2012-03-26
• Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2012-1569?

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.

How severe is CVE-2012-1569?

CVE-2012-1569 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2012-1569 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-1569?

CVE-2012-1569 primarily affects Gnu Gnutls. In total, 221 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-1569?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-1569 published?

CVE-2012-1569 was published on 2012-03-26 and last updated on 2026-06-16.

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
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00001.html
• http://rhn.redhat.com/errata/RHSA-2012-0427.html
• http://rhn.redhat.com/errata/RHSA-2012-0488.html
• http://rhn.redhat.com/errata/RHSA-2012-0531.html
• http://secunia.com/advisories/48397
• http://secunia.com/advisories/48488
• http://secunia.com/advisories/48505
• http://secunia.com/advisories/48578
• http://secunia.com/advisories/48596
• http://secunia.com/advisories/49002
• http://secunia.com/advisories/50739
• http://secunia.com/advisories/57260
• http://www.debian.org/security/2012/dsa-2440
• http://www.gnu.org/software/gnutls/security.html
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:039
• http://www.openwall.com/lists/oss-security/2012/03/20/3
• http://www.openwall.com/lists/oss-security/2012/03/20/8
• http://www.openwall.com/lists/oss-security/2012/03/21/5

Affected products (221)

• cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.0.16:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.0.17:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.0.18:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.0.19:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.0.20:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.0.21:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.0.22:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.0.23:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.0.24:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.0.25:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.1.13:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.1.14:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.1.15:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.1.16:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.1.17:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.1.18:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.1.19:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.1.20:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.1.21:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.1.22:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.1.23:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.5:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.6:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.7:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.8:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.8.1a1:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.9:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.10:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.2.11:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gnutls:1.3.4:*:*:*:*:*:*:*

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