Vulnerability in OpenSSL Extension Of Ruby (Git Trunk)
CVE-2011-4121
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.025 (84.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
Affected products
- OpenSSL Extension Of Ruby (Git Trunk) — versions versions after 2011-09-01 up to 2011-11-03
- Ruby-Lang Ruby
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-tracker.debian.org/tracker/CVE-2011-4121 (Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- access.redhat.com/security/cve/cve-2011-4121 (Third Party Advisory)
- www.openwall.com/lists/oss-security/2013/07/01/1 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2011-4121?
- CVE-2011-4121 is a critical-severity vulnerability in OpenSSL Extension Of Ruby (Git Trunk), classified under Inadequate Encryption Strength. CVSS score: 9.8/10. Published 2019-11-26.
- How severe is CVE-2011-4121?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2011-4121 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.