CVE-2012-5370
MEDIUM severity · CVSS 5 · CWE-310
5CVSS MEDIUM
Summary
JRuby 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 the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4838.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impactNone
Integrity impactNone
Availability impact—
Exploit probability (EPSS)2%
AV:N/AC:L/Au:N/C:N/I:N/A:P
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- 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://rhn.redhat.com/errata/RHSA-2013-0533.html
- http://www.ocert.org/advisories/ocert-2012-001.html
- https://bugzilla.redhat.com/show_bug.cgi?id=880671
- https://www.131002.net/data/talks/appsec12_slides.pdf