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CVE-2011-4838Date: (C)2011-12-29   (M)2018-02-19


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 V3 Severity:CVSS V2 Severity:
CVSS Score  : CVSS Score  : 7.8
Exploit Score: Exploit Score: 10.0
Impact Score : Impact Score : 6.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: Access Vector: NETWORK
Attack Complexity: Access Complexity: LOW
Privileges Required: Authentication: NONE
User Interaction: Confidentiality: NONE
Scope: Integrity: NONE
Confidentiality: Availability: COMPLETE
Integrity:  
Availability:  
  





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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