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Last updated: 4/23/2014

CVE Publication rate: 20.5

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National Cyber Awareness System

Vulnerability Summary for CVE-2013-1821

Original release date: 04/09/2013
Last revised: 02/11/2014
Source: US-CERT/NIST

Overview

lib/rexml/text.rb in the REXML parser in Ruby before 1.9.3-p392 allows remote attackers to cause a denial of service (memory consumption and crash) via crafted text nodes in an XML document, aka an XML Entity Expansion (XEE) attack.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 (MEDIUM) (AV:N/AC:L/AU:N/C:N/I:N/A:P) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service
Per: http://www.ruby-lang.org/en/news/2013/02/22/rexml-dos-2013-02-22/ "Affected versions All ruby 1.9 versions prior to ruby 1.9.3 patchlevel 392 All ruby 2.0 versions prior to ruby 2.0.0 patchlevel 0 prior to trunk revision 39384"

References to Advisories, Solutions, and Tools

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External Source: REDHAT
Name: RHSA-2013:0611
External Source: REDHAT
Name: RHSA-2013:0612
External Source: SUSE
Name: openSUSE-SU-2013:0614
External Source: CONFIRM
Name: http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=39384
External Source: SECUNIA
Name: 52783
Type: Advisory
External Source: SUSE
Name: SUSE-SU-2013:0647
External Source: CONFIRM
Name: https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0092
External Source: MANDRIVA
Name: MDVSA-2013:124
External Source: REDHAT
Name: RHSA-2013:1147
External Source: MISC
Name: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=702525
External Source: DEBIAN
Name: DSA-2809
External Source: REDHAT
Name: RHSA-2013:1028
External Source: SUSE
Name: SUSE-SU-2013:0609
External Source: SECUNIA
Name: 52902
Type: Advisory
External Source: UBUNTU
Name: USN-1780-1
External Source: MLIST
Name: [oss-security] 20130306 CVE for Ruby Entity expansion DoS vulnerability in REXML (XML bomb)
External Source: SLACKWARE
Name: SSA:2013-075-01
External Source: CONFIRM
Name: http://www.ruby-lang.org/en/news/2013/02/22/rexml-dos-2013-02-22/
Type: Advisory
External Source: MISC
Name: https://bugzilla.redhat.com/show_bug.cgi?id=914716
External Source: SUSE
Name: openSUSE-SU-2013:0603
External Source: DEBIAN
Name: DSA-2738

Technical Details

Vulnerability Type (View All)