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CVE
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CVE-2011-4838

Date: (C)2011-12-29   (M)2017-08-29 


JRuby before 1.6.5.1 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.

CVSS Score: 7.8Access Vector: NETWORK
Exploit Score: 10.0Access Complexity: LOW
Impact Score: 6.9Authentication: NONE
 Confidentiality: NONE
 Integrity: NONE
 Availability: COMPLETE





Reference:
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html
SECUNIA-47407
SECUNIA-50084
GLSA-201207-06
RHSA-2012:1232
VU#903934
http://jruby.org/2011/12/27/jruby-1-6-5-1.html
http://www.nruns.com/_downloads/advisory28122011.pdf
http://www.ocert.org/advisories/ocert-2011-003.html
jruby-hash-dos(72019)

CPE    55
cpe:/a:jruby:jruby:1.4.0:rc1
cpe:/a:jruby:jruby:1.4.0:rc3
cpe:/a:jruby:jruby:1.4.0:rc2
cpe:/a:jruby:jruby:1.0.1
...
CWE    1
CWE-20

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