[KIS-2014-18] Mantis Bug Tracker <= 1.2.17 (ImportXml.php) PHP Code Injection Vulnerability

2015-01-02T00:00:00
ID SECURITYVULNS:DOC:31583
Type securityvulns
Reporter Securityvulns
Modified 2015-01-02T00:00:00

Description


Mantis Bug Tracker <= 1.2.17 (ImportXml.php) PHP Code Injection Vulnerability

[-] Software Link:

http://www.mantisbt.org/

[-] Affected Versions:

All versions from 1.2.0 to 1.2.17.

[-] Vulnerability Description:

The vulnerable code is located in the /plugins/XmlImportExport/ImportXml.php script:

  1. printf( "Processing cross-references for %s issues...", count( $importedIssues ) );
  2. foreach( $importedIssues as $oldId => $newId ) {
  3. $bugData = bug_get( $newId, true );
  4. $bugLinkRegexp = '/(^|[^\w])(' . preg_quote( $this->source_->issuelink, '/' ) . ')(\d+)\b/e';
  5. $replacement = '"\\1" . $this->getReplacementString( "\\2", "\\3" )';
  6. $bugData->description = preg_replace( $bugLinkRegexp, $replacement, $bugData->description );
  7. $bugData->update( true, true );
  8. }

User input passed through the "description" field (and the "issuelink" attribute) of the uploaded XML file when importing data through the Import/Export plugin is not properly sanitized before being used in a "preg_replace()" call with the 'e' modifier at line 113. This can be exploited by unauthenticated attackers to inject and execute arbitrary PHP code by uploading a specially crafted XML file. Successful exploitation of this vulnerability requires the Import/Export plugin to be enabled (disabled by default).

[-] Solution:

Update to version 1.2.18.

[-] Disclosure Timeline:

[04/10/2014] - Issue reported to http://www.mantisbt.org/bugs/view.php?id=17725 [05/10/2014] - CVE number requested [06/10/2014] - CVE number assigned [01/11/2014] - Issue fixed on GitHub [08/11/2014] - Public disclosure by the vendor on the OSS mailing list [23/12/2014] - Publication of this advisory

[-] CVE Reference:

The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2014-7146 to this vulnerability.

[-] Credits:

Vulnerability discovered by Egidio Romano.

[-] Original Advisory:

http://karmainsecurity.com/KIS-2014-18