VulnerabilityModified
CVE-2011-4121
A remote attacker could use this flaw to bypass or corrupt integrity of services, depending on strong private RSA keys generation mechanism.
CRITICAL 9.8EPSS 2.53%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.53% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-326
- Affected
- ruby-lang/ruby
- Source
- secalert@redhat.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.