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)…
Does this matter?
Lower severity and a low EPSS score (3.33%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 3.33% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-310
- Affected
- ruby-lang/ruby
- Source
- cve@mitre.org
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?1027747Patch
- 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/Patch, Vendor Advisory
- http://www.securityfocus.com/bid/56484
- http://www.ubuntu.com/usn/USN-1733-1
- https://bugzilla.redhat.com/show_bug.cgi?id=875236Patch
- 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?1027747Patch
- 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/Patch, Vendor Advisory
- http://www.securityfocus.com/bid/56484
- http://www.ubuntu.com/usn/USN-1733-1
- https://bugzilla.redhat.com/show_bug.cgi?id=875236Patch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79993
- https://www.131002.net/data/talks/appsec12_slides.pdf
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.