GLSA-201207-06 : JRuby: Denial of Service

High Nessus Plugin ID 59898


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-201207-06 (JRuby: Denial of Service)

JRuby does not properly randomize hash functions to protect against hash collision attacks.
Impact :

A remote attacker could send a specially crafted input, possibly resulting in a Denial of Service condition.
Workaround :

There is no known workaround at this time.


All JRuby users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=dev-java/jruby-'

See Also

Plugin Details

Severity: High

ID: 59898

File Name: gentoo_GLSA-201207-06.nasl

Version: $Revision: 1.5 $

Type: local

Published: 2012/07/10

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.8

Temporal Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:jruby, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2012/07/09

Reference Information

CVE: CVE-2011-4838

BID: 51233

OSVDB: 78116

GLSA: 201207-06