Home/CVE/Rack before 1.1.3, 1.2.x before 1.2.5, and 1.3.x before 1.3.6 computes hash values for form parameters without restricti
CVE

CVE-2011-5036

Rack before 1.1.3, 1.2.x before 1.2.5, and 1.3.x before 1.3.6 computes hash values for form parameters without restricti

Rack before 1.1.3, 1.2.x before 1.2.5, and 1.3.x before 1.3.6 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.

MEDIUM · CVSS 5 EPSS 0.01278
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
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Affected Products & Versions

2
rack project rack<= 1.1.0
rack project rackall versions
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Affected Packages

2
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.jruby:jruby-parent MODERATE fixed in 1.6.5.1
RubyGems rack MODERATE fixed in 1.1.3
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Public Exploits & PoCs

1
pocgist.github.com · 52bbc6b9cc19ce330829gist.github.com
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Scoring & Timeline

5
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Published to NVD30 Dec 2011 · 01:55 AM
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html
http://www.debian.org/security/2013/dsa-2783
http://www.kb.cert.org/vuls/id/903934US Government Resource
http://www.nruns.com/_downloads/advisory28122011.pdf
http://www.ocert.org/advisories/ocert-2011-003.html
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