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Fencer Intel
medium 5.0

CVE-2012-1573 json

gnutls_cipher.c in libgnutls in GnuTLS before 2.12.17 and 3.x before 3.0.15 does not properly handle data encrypted with a block cipher, wh…

published 2012-03-26 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-1591

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.0%
EPSS 4.0% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

gnutls_cipher.c in libgnutls in GnuTLS before 2.12.17 and 3.x before 3.0.15 does not properly handle data encrypted with a block cipher, which allows 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.

Patch / fix

  • gnutls28 Debian 14, Debian 13, Debian 12 3.0.17-2

debian advisories DEBIAN-CVE-2012-1573

  • gnutls RHEL 6 2.8.5-4.el6_2.2
  • gnutls-guile RHEL 6 2.8.5-4.el6_2.2
  • gnutls-utils RHEL 6 2.8.5-4.el6_2.2
  • gnutls RHEL 5 1.4.1-7.el5_8.2
  • gnutls-utils RHEL 5 1.4.1-7.el5_8.2
  • rhev-hypervisor6 RHEL 6 6.2-20120423.1.el6_2
  • rhev-hypervisor6-tools RHEL 6 6.2-20120423.1.el6_2

red hat advisories RHSA-2012:0429RHSA-2012:0428RHSA-2012:0531

  • gnutls openSUSE Tumbleweed 3.4.15-1.1

opensuse advisories openSUSE-SU-2024:10105-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-1573 updated cvss 5.0

gnutls: TLS record handling issue (GNUTLS-SA-2012-2, MU-201202-01)

  • Red Hat Enterprise Linux 4 gnutls Red Hat Enterprise Linux 6 mingw32-gnutls
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux (v. 5 server) gnutls 1.4.1-7.el5_8.2, gnutls-utils 1.4.1-7.el5_8.2 Red Hat Enterprise Linux Desktop (v. 5 client) gnutls 1.4.1-7.el5_8.2, gnutls-utils 1.4.1-7.el5_8.2
    fixed: vendor fix RHSA-2012:0428
  • Red Hat Enterprise Linux Desktop (v. 6) gnutls 2.8.5-4.el6_2.2, gnutls-utils 2.8.5-4.el6_2.2 Red Hat Enterprise Linux Desktop Optional (v. 6) gnutls 2.8.5-4.el6_2.2, gnutls-guile 2.8.5-4.el6_2.2 Red Hat Enterprise Linux HPC Node (v. 6) gnutls 2.8.5-4.el6_2.2, gnutls-utils 2.8.5-4.el6_2.2 Red Hat Enterprise Linux HPC Node Optional (v. 6) gnutls 2.8.5-4.el6_2.2, gnutls-guile 2.8.5-4.el6_2.2 Red Hat Enterprise Linux Server (v. 6) gnutls 2.8.5-4.el6_2.2, gnutls-utils 2.8.5-4.el6_2.2 Red Hat Enterprise Linux Server Optional (v. 6) gnutls 2.8.5-4.el6_2.2, gnutls-guile 2.8.5-4.el6_2.2
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) gnutls 2.8.5-4.el6_2.2, gnutls-utils 2.8.5-4.el6_2.2 Red Hat Enterprise Linux Workstation Optional (v. 6) gnutls 2.8.5-4.el6_2.2, gnutls-guile 2.8.5-4.el6_2.2
    fixed: vendor fix RHSA-2012:0429
  • Red Hat RHEL Desktop Workstation (v. 5 client) gnutls 1.4.1-7.el5_8.2
    fixed: vendor fix RHSA-2012:0428
  • Red Hat RHEV Hypervisor for RHEL-6 rhev-hypervisor6 6.2-20120423.1.el6_2, rhev-hypervisor6-tools 6.2-20120423.1.el6_2
    fixed: vendor fix RHSA-2012:0531

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.00% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • blog.mudynamics.com http://blog.mudynamics.com/2012/03/20/gnutls-and-libtasn1-vulns/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.