Input validation error in jruby - CVE-2011-4838
Published: December 30, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44422
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2011-4838
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: jruby
Affected software:
jruby
jruby
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
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.
How to mitigate CVE-2011-4838
Install update from vendor's website.
Sources
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html
- http://jruby.org/2011/12/27/jruby-1-6-5-1.html
- http://rhn.redhat.com/errata/RHSA-2012-1232.html
- http://secunia.com/advisories/47407
- http://secunia.com/advisories/50084
- http://security.gentoo.org/glsa/glsa-201207-06.xml
- http://www.kb.cert.org/vuls/id/903934
- http://www.nruns.com/_downloads/advisory28122011.pdf
- http://www.ocert.org/advisories/ocert-2011-003.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/72019