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Fencer Intel
medium 6.8

CVE-2012-2333 json

Integer underflow in OpenSSL before 0.9.8x, 1.0.0 before 1.0.0j, and 1.0.1 before 1.0.1c, when TLS 1.1, TLS 1.2, or DTLS is used with CBC e…

published 2012-05-14 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-2326

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
27.9%
EPSS 27.9% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

Integer underflow in OpenSSL before 0.9.8x, 1.0.0 before 1.0.0j, and 1.0.1 before 1.0.1c, when TLS 1.1, TLS 1.2, or DTLS is used with CBC encryption, allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other impact via a crafted TLS packet that is not properly handled during a certain explicit IV calculation.

Patch / fix

  • openssl Debian 14, Debian 13, Debian 12 1.0.1c-1

debian advisories DEBIAN-CVE-2012-2333

  • openssl098 Ubuntu 14.04 LTS 0.9.8o-7ubuntu3.2.14.04.1

ubuntu advisories UBUNTU-CVE-2012-2333

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openssl RHEL 5 0.9.8e-22.el5_8.4
  • openssl RHEL 6 1.0.0-20.el6_2.5
  • openssl-perl RHEL 5 0.9.8e-22.el5_8.4
  • openssl-perl RHEL 6 1.0.0-20.el6_2.5

red hat advisories RHSA-2012:0699

  • libqt4 SLES 12 SP1, SLES 12, SLED 12 SP1 +7 more 4.8.6-7.1
  • libqt4-sql-plugins SLES 12 SP1, SLES 12, SLED 12 SP1 +7 more 4.8.6-7.1

suse advisories SUSE-SU-403SUSE-SU-403 Forbidden-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-2012-2333 updated cvss 5.0

openssl: record length handling integer underflow

  • Red Hat Enterprise Linux 6 openssl098e
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Enterprise Web Server 1 openssl
    affected: no fix available
  • Red Hat Enterprise Linux (v. 5 server) openssl 0.9.8e-22.el5_8.4, openssl-perl 0.9.8e-22.el5_8.4 Red Hat Enterprise Linux Desktop (v. 5 client) openssl 0.9.8e-22.el5_8.4, openssl-perl 0.9.8e-22.el5_8.4 Red Hat Enterprise Linux Desktop (v. 6) openssl 1.0.0-20.el6_2.5 Red Hat Enterprise Linux Desktop Optional (v. 6) openssl 1.0.0-20.el6_2.5, openssl-perl 1.0.0-20.el6_2.5 Red Hat Enterprise Linux HPC Node (v. 6) openssl 1.0.0-20.el6_2.5 Red Hat Enterprise Linux HPC Node Optional (v. 6) openssl 1.0.0-20.el6_2.5, openssl-perl 1.0.0-20.el6_2.5
    +4 more products
    Red Hat Enterprise Linux Server (v. 6) openssl 1.0.0-20.el6_2.5 Red Hat Enterprise Linux Server Optional (v. 6) openssl 1.0.0-20.el6_2.5, openssl-perl 1.0.0-20.el6_2.5 Red Hat Enterprise Linux Workstation (v. 6) openssl 1.0.0-20.el6_2.5 Red Hat Enterprise Linux Workstation Optional (v. 6) openssl 1.0.0-20.el6_2.5, openssl-perl 1.0.0-20.el6_2.5
    fixed: vendor fix RHSA-2012:0699
  • Red Hat JBoss Enterprise Application Platform 5.1
    fixed: vendor fix RHSA-2012:1307
  • Red Hat JBoss Enterprise Application Platform 6.0
    fixed: vendor fix RHSA-2012:1308
  • Red Hat JBoss Web Server 1.0
    fixed: vendor fix RHSA-2012:1306
  • Red Hat RHEL Desktop Workstation (v. 5 client) openssl 0.9.8e-22.el5_8.4
    fixed: vendor fix RHSA-2012:0699
  • Red Hat Enterprise Linux 4 openssl Red Hat Enterprise Linux 5 openssl097a
    not affected: vulnerable code not present

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

27.87% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
Technology feeds

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.