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suseSuseSUSE-SU-2014:0320-1
HistoryMar 04, 2014 - 1:04 a.m.

Security update for gnutls (critical)

2014-03-0401:04:52
lists.opensuse.org
24

0.961 High

EPSS

Percentile

99.3%

The GnuTLS library received a critical security fix and
other updates:

  • CVE-2014-0092: The X.509 certificate verification had
    incorrect error handling, which could lead to broken
    certificates marked as being valid.
  • CVE-2009-5138: A verification problem in handling V1
    certificates could also lead to V1 certificates incorrectly
    being handled.
  • CVE-2013-2116: The _gnutls_ciphertext2compressed
    function in lib/gnutls_cipher.c in GnuTLS allowed remote
    attackers to cause a denial of service (buffer over-read
    and crash) via a crafted padding length.
  • CVE-2013-1619: The TLS implementation in GnuTLS did
    not properly consider timing side-channel attacks on a
    noncompliant MAC check operation during the processing of
    malformed CBC padding, which allows remote attackers to
    conduct distinguishing attacks and plaintext-recovery
    attacks via statistical analysis of timing data for crafted
    packets, a related issue to CVE-2013-0169. (Lucky13)
  • CVE-2012-1569: The asn1_get_length_der function in
    decoding.c in GNU Libtasn1 , as used in GnuTLS did not
    properly handle certain large length values, which allowed
    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.
  • CVE-2012-1573: gnutls_cipher.c in libgnutls in GnuTLS
    did not properly handle data encrypted with a block cipher,
    which allowed remote attackers to cause a denial of service
    (heap memory corruption and application crash) via a
    crafted record, as demonstrated by a crafted
    GenericBlockCipher structure.
  • CVE-2012-0390: The DTLS implementation in GnuTLS
    executed certain error-handling code only if there is a
    specific relationship between a padding length and the
    ciphertext size, which made it easier for remote attackers
    to recover partial plaintext via a timing side-channel
    attack, a related issue to CVE-2011-4108.

Also some non security bugs have been fixed:

  • Did some more s390x size_t vs int fixes. (bnc#536809,
    bnc#659128)
  • re-enabled "legacy negotiation" (bnc#554084)
  • fix safe-renegotiation for sle10sp3 and sle10sp4 bug
    (bnc#554084)
  • fix bug bnc#536809, fix gnutls-cli to abort
    connection after detecting a bad certificate