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Full Disclosure: Arbitrary Code Execution in LedgerSMB CVE-2006-5872

from [Chris Travers] Network Security [Permanent Link]
Subject: Full Disclosure: Arbitrary Code Execution in LedgerSMB CVE-2006-5872
Date: Fri, 26 Jan 2007 21:46:50 -0800
CVE-2006-5872 (filed against SQL-Ledger) also affects LedgerSMB. This was first fixed in LedgerSMB 1.1.5 but due to a number of unrelated bugs, we recommend upgrading to 1.1.7. SQL-Ledger fixed the problem in 2.6.21.

This occurs due to the improper handling of input handling in the redirect function which also allows the user to specify a file with arguments to be run via Perl. However, since one can specify -e as the script (making the command line perl -e ....) one can specify whatever code to execute one would like.

The following link demonstrates the vulnerability.

http://127.0.0.1/sql-ledger/login.pl?login=demo&script=-e%3fprint%20STDERR%20%27hello%20world%27%3b&action=logout <http://127.0.0.1/sql-ledger/login.pl?login=demo&script=-e%3fprint%20STDERR%20%27hello%20world%27%3b&action=logout>

Best Wishes,
Chris Travers
Metatron Technology Consulting

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