medium
5
CWE
611
Advisory Published
Updated

CVE-2014-8090: XEE

First published: Fri Nov 21 2014(Updated: )

The REXML parser in Ruby 1.9.x before 1.9.3 patchlevel 551, 2.0.x before 2.0.0 patchlevel 598, and 2.1.x before 2.1.5 allows remote attackers to cause a denial of service (CPU and memory consumption) a crafted XML document containing an empty string in an entity that is used in a large number of nested entity references, aka an XML Entity Expansion (XEE) attack. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-1821 and CVE-2014-8080.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Ruby<=1.9.3
Ruby=1.9.3
Ruby=1.9.3-p0
Ruby=1.9.3-p125
Ruby=1.9.3-p194
Ruby=1.9.3-p286
Ruby=1.9.3-p383
Ruby=1.9.3-p385
Ruby=1.9.3-p392
Ruby=1.9.3-p426
Ruby=1.9.3-p429
Ruby=1.9.3-p448
Ruby=1.9.3-p545
Ruby=1.9.3-p547
Ruby=2.0.0
Ruby=2.0.0-p0
Ruby=2.0.0-p195
Ruby=2.0.0-p247
Ruby=2.0.0-p451
Ruby=2.0.0-p481
Ruby=2.0.0-p576
Ruby=2.0.0-p594
Ruby=2.1.1
Ruby=2.1.2
Ruby=2.1.3
Ruby=2.1.4

Remedy

http://www.ubuntu.com/usn/USN-2412-1

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2014-8090?

    CVE-2014-8090 has a high severity level as it allows remote attackers to cause a denial of service through CPU and memory consumption.

  • How do I fix CVE-2014-8090?

    To fix CVE-2014-8090, upgrade Ruby to version 1.9.3 patchlevel 551 or higher, 2.0.0 patchlevel 598 or higher, or 2.1.5 or higher.

  • Which Ruby versions are affected by CVE-2014-8090?

    CVE-2014-8090 affects Ruby versions 1.9.x before patchlevel 551, 2.0.x before patchlevel 598, and 2.1.x before patchlevel 5.

  • What type of attack does CVE-2014-8090 enable?

    CVE-2014-8090 enables a denial of service (DoS) attack through resource exhaustion via crafted XML documents.

  • Is CVE-2014-8090 related to XML processing in Ruby?

    Yes, CVE-2014-8090 specifically relates to the REXML parser in Ruby which is vulnerable to handling certain XML entities.

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