CVE-2012-0027 — The GOST ENGINE in OpenSSL before 1

The GOST ENGINE in OpenSSL before 1.0.0f does not properly handle invalid parameters for the GOST block cipher, which allows remote attackers to cause a denial of service (daemon crash) via crafted data from a TLS client.

01What is this vulnerability?

The GOST ENGINE in OpenSSL before 1.0.0f does not properly handle invalid parameters for the GOST block cipher, which allows remote attackers to cause a denial of service (daemon crash) via crafted data from a TLS client.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2012-01-06T01:00:00.000Z
• Last modified: 2024-08-06T18:09:17.298Z

09References

• h20000.www2.hp.com — http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
• www-01.ibm.com — http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00017.html
• www.openssl.org — http://www.openssl.org/news/secadv_20120104.txt
• www.mandriva.com — http://www.mandriva.com/security/advisories?name=MDVSA-2012:007
• secunia.com — http://secunia.com/advisories/57353
• h20000.www2.hp.com — http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
• osvdb.org — http://osvdb.org/78191