CVE-2012-5371
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- http://2012.appsec-forum.ch/conferences/#c17
- http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf
- http://secunia.com/advisories/51253
- http://securitytracker.com/id?1027747
- http://www.ocert.org/advisories/ocert-2012-001.html
- http://www.osvdb.org/87280
- http://www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/
- http://www.securityfocus.com/bid/56484
- http://www.ubuntu.com/usn/USN-1733-1
- https://bugzilla.redhat.com/show_bug.cgi?id=875236
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79993
- https://www.131002.net/data/talks/appsec12_slides.pdf
- http://2012.appsec-forum.ch/conferences/#c17
- http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf
- http://secunia.com/advisories/51253
- http://securitytracker.com/id?1027747
- http://www.ocert.org/advisories/ocert-2012-001.html
- http://www.osvdb.org/87280
- http://www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/
- http://www.securityfocus.com/bid/56484
- http://www.ubuntu.com/usn/USN-1733-1
- https://bugzilla.redhat.com/show_bug.cgi?id=875236
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79993
- https://www.131002.net/data/talks/appsec12_slides.pdf
CWEs
CWE-310
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.