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    CVE-2014-3466

    Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before 3.2.15, and 3.3.x before 3.3.4 allows remote servers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a long session id in a ServerHello message.

    Published:May 30, 2014
    Last Modified:Apr 12, 2025
    EPS:Jun 3, 2014
    EPSS Score:0.23263
    CVSS Score:6.8

    Affected Products

    Vendor
    Gnu
    Product
    Gnutls
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    http://radare.today/technical-analysis-of-the-gnutls-hello-vulnerability/https://www.gitorious.org/gnutls/gnutls/commit/688ea6428a432c39203d00acd1af0e7684e5ddfdhttp://radare.today/technical-analysis-of-the-gnutls-hello-vulnerability/https://www.gitorious.org/gnutls/gnutls/commit/688ea6428a432c39203d00acd1af0e7684e5ddfdhttps://github.com/azet/CVE-2014-3466_PoC

    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://linux.oracle.com/errata/ELSA-2014-0594.html
    http://linux.oracle.com/errata/ELSA-2014-0595.html
    http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00002.html
    http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00007.html
    http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00010.html
    http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00015.html
    http://radare.today/technical-analysis-of-the-gnutls-hello-vulnerability/
    http://rhn.redhat.com/errata/RHSA-2014-0594.html
    http://rhn.redhat.com/errata/RHSA-2014-0595.html
    http://rhn.redhat.com/errata/RHSA-2014-0684.html
    http://rhn.redhat.com/errata/RHSA-2014-0815.html
    http://secunia.com/advisories/58340
    http://secunia.com/advisories/58598
    http://secunia.com/advisories/58601
    http://secunia.com/advisories/58642
    http://secunia.com/advisories/59016
    http://secunia.com/advisories/59021
    http://secunia.com/advisories/59057
    http://secunia.com/advisories/59086
    http://secunia.com/advisories/59408
    http://secunia.com/advisories/59838
    http://secunia.com/advisories/60384
    http://www-01.ibm.com/support/docview.wss?uid=swg21678776
    http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5096155
    http://www.debian.org/security/2014/dsa-2944
    http://www.gnutls.org/security.html
    http://www.novell.com/support/kb/doc.php?id=7015302
    http://www.novell.com/support/kb/doc.php?id=7015303
    http://www.securityfocus.com/bid/67741
    http://www.securitytracker.com/id/1030314
    http://www.ubuntu.com/usn/USN-2229-1
    https://bugzilla.redhat.com/show_bug.cgi?id=1101932
    https://www.gitorious.org/gnutls/gnutls/commit/688ea6428a432c39203d00acd1af0e7684e5ddfd
    http://linux.oracle.com/errata/ELSA-2014-0594.html
    http://linux.oracle.com/errata/ELSA-2014-0595.html
    http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00002.html
    http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00007.html
    http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00010.html
    http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00015.html
    http://radare.today/technical-analysis-of-the-gnutls-hello-vulnerability/
    http://rhn.redhat.com/errata/RHSA-2014-0594.html
    http://rhn.redhat.com/errata/RHSA-2014-0595.html
    http://rhn.redhat.com/errata/RHSA-2014-0684.html
    http://rhn.redhat.com/errata/RHSA-2014-0815.html
    http://secunia.com/advisories/58340
    http://secunia.com/advisories/58598
    http://secunia.com/advisories/58601
    http://secunia.com/advisories/58642
    http://secunia.com/advisories/59016
    http://secunia.com/advisories/59021
    http://secunia.com/advisories/59057
    http://secunia.com/advisories/59086
    http://secunia.com/advisories/59408
    http://secunia.com/advisories/59838
    http://secunia.com/advisories/60384
    http://www-01.ibm.com/support/docview.wss?uid=swg21678776
    http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5096155
    http://www.debian.org/security/2014/dsa-2944
    http://www.gnutls.org/security.html
    http://www.novell.com/support/kb/doc.php?id=7015302
    http://www.novell.com/support/kb/doc.php?id=7015303
    http://www.securityfocus.com/bid/67741
    http://www.securitytracker.com/id/1030314
    http://www.ubuntu.com/usn/USN-2229-1
    https://bugzilla.redhat.com/show_bug.cgi?id=1101932
    https://www.gitorious.org/gnutls/gnutls/commit/688ea6428a432c39203d00acd1af0e7684e5ddfd

    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