Vulnerability in Ruby-Lang Ruby
CVE-2014-2734
The openssl extension in Ruby 2.x does not properly maintain the state of process memory after a file is reopened, which allows remote attackers to spoof signatures within the context of a Ruby script that attempts signature verification after performing a certain sequence of filesystem operations. NOTE: this issue has been disputed by the Ruby OpenSSL team and third parties, who state that the original demonstration PoC contains errors and redundant or unnecessarily-complex code that does not appear to be related to a demonstration of the issue. As of 20140502, CVE is not aware of any public comment by the original researcher
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.8 (Medium). Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.053 (92.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.053 · newest: 0.053 · change: 0.000
Affected products
- Ruby-Lang Ruby — versions 2.0, 2.0.0, 2.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- packetstormsecurity.com/files/126218/Ruby-OpenSSL-Private-Key-Spoofing.html (Exploit)
- www.osvdb.org/106006 (vdb-entry)
- news.ycombinator.com/item
- www.securityfocus.com/bid/66956 (vdb-entry)
- seclists.org/fulldisclosure/2014/May/13 (mailing-list)
- gist.github.com/10446549
- www.ruby-lang.org/en/news/2014/05/09/dispute-of-vulnerability-cve-2014-2734/
- gist.github.com/emboss/91696b56cd227c8a0c13
- github.com/adrienthebo/cve-2014-2734/
- seclists.org/fulldisclosure/2014/Apr/231 (mailing-list, Exploit)
Frequently asked questions
- What is CVE-2014-2734?
- CVE-2014-2734 is a vulnerability in Ruby-Lang Ruby, classified under CWE-399. Published 2014-04-24.
- Is CVE-2014-2734 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.