Ruby WEBrick directory traversal

ruby-webrick-directory-traversal (41010) The risk level is classified as MediumMedium Risk

Description:

Ruby could allow a remote attacker to traverse directories on the system, caused by an error in the WEBrick library. An attacker could send a specially-crafted URL request containing an encoded backslash (..%5c) or files that match patterns specified in the :NondisclosureName option to view arbitrary files on the system.

*CVSS:

Base Score: 4.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: None
  Availability Impact: None
 
Temporal Score: 3.7
  Exploitability: High
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Obtain Information

Remedy:

Refer to the Ruby Web site for patch, upgrade or suggested workaround information. See References.

References:

  • Ruby Programming Language Web site: File access vulnerability of WEBrick.
  • BID-28123: Ruby WEBrick Remote Directory Traversal and Information Disclosure Vulnerabilities
  • CVE-2008-1145: Directory traversal vulnerability in WEBrick in Ruby 1.8 before 1.8.5-p115 and 1.8.6-p114, and 1.9 through 1.9.0-1, when running on systems that support backslash (\) path separators or case-insensitive file names, allows remote attackers to access arbitrary files via (1) ..%5c (encoded backslash) sequences or (2) filenames that match patterns in the :NondisclosureName option.
  • MDVSA-2008:141: Updated ruby packages fix vulnerabilities
  • MDVSA-2008:142: Updated ruby packages fix vulnerabilities
  • OSVDB ID: 42615: Ruby WEBrick WEBrick::HTTPServ* Encoded Traversal Arbitrary File Access
  • OSVDB ID: 42616: Ruby WEBrick WEBrick::HTTPServ* :NondisclosureName Option Mixed Case Arbitrary File Access
  • RHSA-2008-0897: Moderate: ruby security update
  • SA29232: Ruby WEBrick Information Disclosure Vulnerabilities
  • SA30802: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
  • SECTRACK ID: 1019562: Ruby Directory Traversal Flaw in WEBrick Library Lets Remote Users View Files on the Target System.
  • SUSE-SR:2008:017: SUSE Security Summary Report
  • US-CERT VU#404515: Ruby WEBrick vulnerable to directory traversal
  • VUPEN/ADV-2008-0787: Ruby WEBrick Library Multiple Remote Directory Traversal Vulnerabilities
  • VUPEN/ADV-2008-1981: Apple Mac OS X Command Execution and Security Bypass Issues

Platforms Affected:

  • MandrakeSoft Mandrake Linux 2007.1 X86_64
  • MandrakeSoft Mandrake Linux 2007.1
  • MandrakeSoft Mandrake Linux 2008.0
  • MandrakeSoft Mandrake Linux 2008.0 X86_64
  • 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
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4.7.z AS
  • RedHat Enterprise Linux 5 Client
  • RedHat Enterprise Linux 5
  • RedHat Enterprise Linux 5 Client Workstation
  • RedHat Enterprise Linux 5.2.z EUS
  • RedHat Red Hat Enterprise Linux 4.7.z ES
  • Ruby-lang Ruby 1.8.4 and prior
  • Ruby-lang Ruby 1.8.5-p114 and prior
  • Ruby-lang Ruby 1.8.6-p113 and prior
  • Ruby-lang Ruby 1.9.0-1 and prior

Reported:

Mar 04, 2008

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