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    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.

    Published:Mar 19, 2012
    Last Modified:Apr 11, 2025
    EPS:Mar 26, 2012
    EPSS Score:0.10116
    CVSS Score:5

    Affected Products

    Vendor
    Gnu
    Product
    Gnutls
    Vendor
    Gnu
    Product
    Libtasn1
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    http://blog.mudynamics.com/2012/03/20/gnutls-and-libtasn1-vulns/http://blog.mudynamics.com/2012/03/20/gnutls-and-libtasn1-vulns/

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-42014 (CVSS 6.6) — A flaw was found in GnuTLS. The `gnutls_pkcs11_token_set_pin` function, used for changing the Security Officer…
    CVE-2026-5419 (CVSS 3.7) — A flaw was found in gnutls. The PKCS#7 padding check, performed during decryption, was not constant-time. This…
    CVE-2026-42013 (CVSS 8.2) — A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could ca…
    CVE-2026-42012 (CVSS 7.1) — A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially craft…
    CVE-2026-5260 (CVSS 8.2) — A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA…
    CVE-2026-33846 (CVSS 7.5) — A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The iss…
    CVE-2026-3832 (CVSS 3.7) — A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially craft…
    CVE-2026-33845 (CVSS 7.5) — A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leadi…
    CVE-2026-3833 (CVSS 6.5) — A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `n…
    CVE-2026-42009 (CVSS 7.5) — A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security …

    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
    http://www.securitytracker.com/id?1026829
    http://www.ubuntu.com/usn/USN-1436-1
    https://bugzilla.redhat.com/show_bug.cgi?id=804920
    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
    http://www.securitytracker.com/id?1026829
    http://www.ubuntu.com/usn/USN-1436-1
    https://bugzilla.redhat.com/show_bug.cgi?id=804920

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High