CVE-2011-4815: Input Validation
First published: Fri Dec 30 2011(Updated: )
Ruby (aka CRuby) before 1.8.7-p357 computes hash values without 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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ruby | =1.8.7-p334 | |
| Ruby | =1.8.7-p330 | |
| Ruby | =1.8.7-p302 | |
| Ruby | =1.8.7-p299 | |
| Ruby | <=1.8.7-p352 |
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Reference Links
- http://www.kb.cert.org/vuls/id/903934
- http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/391606
- http://www.ocert.org/advisories/ocert-2011-003.html
- http://www.nruns.com/_downloads/advisory28122011.pdf
- http://support.apple.com/kb/HT5281
- http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
- http://secunia.com/advisories/47822
- http://rhn.redhat.com/errata/RHSA-2012-0069.html
- http://secunia.com/advisories/47405
- http://www.securitytracker.com/id?1026474
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html
- http://www.ruby-lang.org/en/news/2011/12/28/denial-of-service-attack-was-found-for-rubys-hash-algorithm/
- http://rhn.redhat.com/errata/RHSA-2012-0070.html
- http://jvndb.jvn.jp/ja/contents/2012/JVNDB-2012-000066.html
- http://jvn.jp/en/jp/JVN90615481/index.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/72020
Frequently Asked Questions
What is the severity of CVE-2011-4815?
CVE-2011-4815 is classified as a denial of service vulnerability due to its potential to cause excessive CPU consumption.
How do I fix CVE-2011-4815?
To fix CVE-2011-4815, upgrade Ruby to version 1.8.7-p357 or later.
What software versions are affected by CVE-2011-4815?
CVE-2011-4815 affects Ruby versions 1.8.7-p299 through 1.8.7-p352.
What kind of attack does CVE-2011-4815 facilitate?
CVE-2011-4815 allows context-dependent attackers to trigger hash collisions, leading to denial of service.
Is CVE-2011-4815 specific to a certain operating system?
CVE-2011-4815 is related to the Ruby programming language and is not specific to any particular operating system.
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/last-modified-date
- agent/author
- agent/severity
- agent/event
- agent/first-publish-date
- agent/description
- agent/source
- agent/tags
- collector/nvd-historical
- agent/software-canonical-lookup-request
- collector/nvd-index
- vendor/ruby-lang
- canonical/ruby
- version/ruby/1.8.7-p334
- version/ruby/1.8.7-p330
- version/ruby/1.8.7-p302
- version/ruby/1.8.7-p299
- version/ruby/1.8.7-p352