CVE-2011-4121

CriticalCVSS 9.8/10Last modified Jun 16, 2026

Description

The OpenSSL extension of Ruby (Git trunk) versions after 2011-09-01 up to 2011-11-03 always generated an exponent value of '1' to be used for private RSA key generation. A remote attacker could use this flaw to bypass or corrupt integrity of services, depending on strong private RSA keys generation mechanism.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-326

Affected software

Vendor	Product	Versions
OpenSSL	OpenSSL extension of Ruby (Git trunk)	versions after 2011-09-01 up to 2011-11-03

References

http://www.openwall.com/lists/oss-security/2013/07/01/1Mailing List, Third Party Advisory
https://access.redhat.com/security/cve/cve-2011-4121Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4121Issue Tracking, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-4121Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/07/01/1Mailing List, Third Party Advisory
https://access.redhat.com/security/cve/cve-2011-4121Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4121Issue Tracking, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-4121Third Party Advisory

Timeline

Published: Nov 26, 2019
Last modified: Jun 16, 2026
NVD status: Modified

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