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Drupal Comment Preview Arbitrary Code Execution
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Secunia Advisory:
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SA23960
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Release Date:
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2007-01-30
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Last Update:
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2007-02-15
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Popularity:
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12,548 views
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Drupal 4.x
Drupal 5.x
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2007-0626
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Description:
A vulnerability has been reported in Drupal, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to an input sanitation error when processing comment previews (passed in the "comment" parameter in Drupal 5.x or the "edit[comment]" parameter in Drupal 4.x), which can be exploited to execute arbitrary code.
Successful exploitation requires "post comments" privileges and access to multiple input filters (not the default).
The vulnerability is reported in Drupal 4.7.x branch prior to version 4.7.6 and Drupal 5.x branch prior to version 5.1.
Solution:
Apply patches or update to version 4.7.6 and 5.1.
Patch for Drupal 4.7.5:
http://drupal.org/files/sa-2007-005/SA-2007-005-4.7.5.patch
Patch for Drupal 5.0:
http://drupal.org/files/sa-2007-005/SA-2007-005-5.0.patch
Drupal 4.7.6:
http://ftp.osuosl.org/pub/drupal/files/projects/drupal-4.7.6.tar.gz
Drupal 5.1:
http://ftp.osuosl.org/pub/drupal/files/projects/drupal-5.1.tar.gz
Provided and/or discovered by:
Drupal Security Team
Additional information reported by str0ke.
Changelog:
2007-02-01: Added CVE reference.
2007-02-15: Updated "Description" section.
Original Advisory:
http://drupal.org/node/113935
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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