Ruby regex.c denial of service

ruby-regex-dos (44688) The risk level is classified as LowLow Risk

Description:

Ruby is vulnerable to a denial of service, caused by the failure to handle allocated memory by the regular expression engine (regex.c) source file. By sending multiple overly long requests to a Ruby socket, a remote attacker could exploit this vulnerability to cause the application to enter into an infinite loop and consume all available memory resources resulting in a denial of service.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 3.9
  Exploitability: Proof-of-Concept
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

For Apple Mac OS:
Apply Apple Security Update 2009-002, available from the Apple Web site. See References.

Apply the appropriate patch for your system. See References.

References:

  • Apple Web site: About the security content of Security Update 2009-002 / Mac OS X v10.5.7.
  • Ruby Programming Language Web site: Ruby Programming Language.
  • ASA-2008-423: ruby security update (RHSA-2008-0896)
  • ASA-2008-424: ruby security update (RHSA-2008-0897)
  • ASA-2008-425: ruby security update (RHSA-2008-0895)
  • BID-30682: Ruby 'regex.c' Remote Denial Of Service Vulnerability
  • CVE-2008-3443: The regular expression engine (regex.c) in Ruby 1.8.5 and earlier, 1.8.6 through 1.8.6-p286, 1.8.7 through 1.8.7-p71, and 1.9 through r18423 allows remote attackers to cause a denial of service (infinite loop and crash) via multiple long requests to a Ruby socket, related to memory allocation failure, and as demonstrated against Webrick.
  • DSA-1695: ruby1.9 -- memory leak
  • MDVSA-2008:226: ruby
  • RHSA-2008-0895: Moderate: ruby security update
  • RHSA-2008-0896: Moderate: ruby security update
  • RHSA-2008-0897: Moderate: ruby security update
  • SA31430: Ruby Multiple Vulnerabilities
  • SA35074: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
  • SECTRACK ID: 1021075: Ruby 'regex.c' Processing Bug Lets Remote Users Deny Service
  • SUSE-SA:2009:037: dhcp-client security problem
  • USN-651-1: Ruby vulnerabilities
  • USN-691-1: Ruby vulnerability
  • VUPEN/ADV-2009-1297: Apple Mac OS X Code Execution and Security Bypass Vulnerabilities

Platforms Affected:

  • Apple Mac OS X 10.5
  • Apple Mac OS X 10.5.1
  • Apple Mac OS X 10.5.2
  • Apple Mac OS X 10.5.3
  • Apple Mac OS X 10.5.4
  • Apple Mac OS X 10.5.5
  • Apple Mac OS X 10.5.6
  • Apple Mac OS X Server 10.5
  • Apple Mac OS X Server 10.5.1
  • Apple Mac OS X Server 10.5.2
  • Apple Mac OS X Server 10.5.3
  • Apple Mac OS X Server 10.5.4
  • Apple Mac OS X Server 10.5.5
  • Apple Mac OS X Server 10.5.6
  • Canonical Ubuntu 6.06 LTS
  • Canonical Ubuntu 7.04
  • Canonical Ubuntu 7.10
  • Canonical Ubuntu 8.04 LTS
  • Canonical Ubuntu 8.10
  • Debian Debian Linux 4.0
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • MandrakeSoft Mandrake Linux 2008.1 X86_64
  • MandrakeSoft Mandrake Linux 2008.1
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0
  • MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
  • Novell Linux Desktop 9
  • Novell Linux POS 9
  • Novell Open Enterprise Server
  • Novell OpenSUSE 10.3
  • Novell OpenSUSE 11.0
  • Novell SLE SDK 10 SP2
  • Novell SUSE Linux Enterprise 10 SP2 DEBUGINFO
  • Novell SUSE Linux Enterprise Desktop 10 SP2
  • Novell SUSE Linux Enterprise Server 10 SP2
  • RedHat Enterprise Linux 2.1 WS
  • RedHat Enterprise Linux 2.1 ES
  • RedHat Enterprise Linux 2.1 AS
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5 Client Workstation
  • RedHat Enterprise Linux 5
  • SuSE SuSE SLES 9
  • Yukihiro Matsumoto Ruby 1.6.8
  • Yukihiro Matsumoto Ruby 1.8.0
  • Yukihiro Matsumoto Ruby 1.8.1 -9
  • Yukihiro Matsumoto Ruby 1.8.1
  • Yukihiro Matsumoto Ruby 1.8.2 Preview4
  • Yukihiro Matsumoto Ruby 1.8.2
  • Yukihiro Matsumoto Ruby 1.8.2 Preview2
  • Yukihiro Matsumoto Ruby 1.8.2 Preview3
  • Yukihiro Matsumoto Ruby 1.8.3 Preview2
  • Yukihiro Matsumoto Ruby 1.8.3
  • Yukihiro Matsumoto Ruby 1.8.3 Preview1
  • Yukihiro Matsumoto Ruby 1.8.3 Preview3
  • Yukihiro Matsumoto Ruby 1.8.4 Preview2
  • Yukihiro Matsumoto Ruby 1.8.4 Preview1
  • Yukihiro Matsumoto Ruby 1.8.4
  • Yukihiro Matsumoto Ruby 1.8.4 Preview3
  • Yukihiro Matsumoto Ruby 1.8.5 P52
  • Yukihiro Matsumoto Ruby 1.8.5 P231
  • Yukihiro Matsumoto Ruby 1.8.5 P114
  • Yukihiro Matsumoto Ruby 1.8.5 P35
  • Yukihiro Matsumoto Ruby 1.8.5 P2
  • Yukihiro Matsumoto Ruby 1.8.5 P12
  • Yukihiro Matsumoto Ruby 1.8.5 P11
  • Yukihiro Matsumoto Ruby 1.8.5 P115
  • Yukihiro Matsumoto Ruby 1.8.5
  • Yukihiro Matsumoto Ruby 1.8.5 P113
  • Yukihiro Matsumoto Ruby 1.8.5 Preview1
  • Yukihiro Matsumoto Ruby 1.8.5 Preview5
  • Yukihiro Matsumoto Ruby 1.8.5 Preview4
  • Yukihiro Matsumoto Ruby 1.8.5 Preview3
  • Yukihiro Matsumoto Ruby 1.8.5 Preview2
  • Yukihiro Matsumoto Ruby 1.8.6 P36
  • Yukihiro Matsumoto Ruby 1.8.6 P230
  • Yukihiro Matsumoto Ruby 1.8.6 P114
  • Yukihiro Matsumoto Ruby 1.8.6 P111
  • Yukihiro Matsumoto Ruby 1.8.6
  • Yukihiro Matsumoto Ruby 1.8.6 Preview3
  • Yukihiro Matsumoto Ruby 1.8.6 Preview2
  • Yukihiro Matsumoto Ruby 1.8.6 Preview1
  • Yukihiro Matsumoto Ruby 1.8.6 P286
  • Yukihiro Matsumoto Ruby 1.8.6 P110
  • Yukihiro Matsumoto Ruby 1.8.7 P71
  • Yukihiro Matsumoto Ruby 1.8.7
  • Yukihiro Matsumoto Ruby 1.8.7 Preview4
  • Yukihiro Matsumoto Ruby 1.8.7 P17
  • Yukihiro Matsumoto Ruby 1.8.7 P22
  • Yukihiro Matsumoto Ruby 1.8.7 Preview3
  • Yukihiro Matsumoto Ruby 1.8.7 Preview2
  • Yukihiro Matsumoto Ruby 1.8.7 Preview1
  • Yukihiro Matsumoto Ruby 1.9.0
  • Yukihiro Matsumoto Ruby 1.9.0 R18423

Reported:

Aug 13, 2008

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