Vulnerability in Ruby-Lang Ruby
CVE-2012-5371
Ruby (aka CRuby) 1.9 before 1.9.3-p327 and 2.0 before r37575 computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table, as demonstrated by a universal multicollision attack against a variant of the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4815.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.033 (88.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
- Ruby-Lang Ruby — versions 1.9, 1.9.1, 1.9.2
Weakness classification (CWE)
References
- asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bos…
- securitytracker.com/id (Patch, vdb-entry)
- www.osvdb.org/87280 (vdb-entry)
- www.securityfocus.com/bid/56484 (vdb-entry)
- www.131002.net/data/talks/appsec12_slides.pdf
- www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/ (Patch, Vendor Advisory)
- 2012.appsec-forum.ch/conferences/
- bugzilla.redhat.com/show_bug.cgi (Patch)
- secunia.com/advisories/51253 (third-party-advisory)
- www.ocert.org/advisories/ocert-2012-001.html