YaBB multiple language file include

yabb-multiple-language-file-include (34932) The risk level is classified as MediumMedium Risk

Description:

YaBB could allow a remote attacker to include arbitrary files. A remote attacker could send a specially-crafted URL request to multiple scripts using various language parameters to specify a malicious file from the local system, which could allow the attacker to obtain sensitive information or execute arbitrary code on the vulnerable Web server.

Note: In order to exploit this vulnerability to execute arbitrary code, the attacker would first be required to upload a malicious file or inject arbitrary commands into an existing file.

*CVSS:

Base Score: 5.6
  Access Vector: Remote
  Access Complexity: High
  Authentication: Not Required
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 4.5
  Exploitability: Unproven
  Remediation Level: Unavailable
  Report Confidence: Uncorroborated

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of YaBB (2.2 or later), available from the YaBB Web site. See References.

References:

  • Full-Disclosure Mailing List, Tue Jun 19 2007 - 08:28:39 CDT: Local File Include Vulnerabilities in YaBB <= 2.1(all version).
  • YaBB Web site: Free Open Source forum software - Yet another Bulletin Board - YaBB!.
  • BID-24529: YABB Multiple Local File Include Vulnerabilities
  • CVE-2007-3295: Directory traversal vulnerability in Yet another Bulletin Board (YaBB) 2.1 and earlier allows remote authenticated users to execute arbitrary Perl code via a .. (dot dot) in the userlanguage profile setting, which sets the userlanguage key of the member hash, and is propagated to the language variable in (1) HelpCentre.pl and (2) ICQPager.pl, (3) the use_lang variable in Subs.pl, and the actlang variable in (4) Post.pl and (5) InstantMessage.pl; as demonstrated by pointing userlanguage to the English folder, modifying English/HelpCentre.lng file to contain Perl statements, and then invoking the help action in YaBB.pl.
  • OSVDB ID: 37238: YaBB Multiple Script userlanguage Traversal Local File Inclusion
  • SA25734: YaBB "userlanguage" Local File Inclusion Vulnerability

Platforms Affected:

  • YaBB YaBB 2.1 and prior

Reported:

Jun 19, 2007

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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