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ProFTPD "mod_ctrls" Privilege Escalation Vulnerability
Secunia Advisory: SA23371
Release Date: 2006-12-14
Last Update: 2007-02-14
Popularity: 10,088 views

Critical:
Not critical
Impact: Privilege escalation
Where: Local system
Solution Status: Vendor Patch

Software:ProFTPD 1.2.x
ProFTPD 1.3.x

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CVE reference:CVE-2006-6563


Description:
Alfredo Ortega has reported a vulnerability in the mod_ctrls module for ProFTPD, which can be exploited by malicious, local users to gain escalated privileges.

The vulnerability is caused due to a boundary error within the "pr_ctrls_recv_request()" function in src/ctrls.c and can be exploited to cause a buffer overflow by sending specially crafted control messages to the module.

Successful exploitation may allow to execute arbitrary code with escalated privileges, but requires that the mod_ctrl module is used and that ACLs allow the attacker to access the module.

The vulnerability is reported in versions prior to 1.3.1rc1.

Solution:
Update to version 1.3.1rc1.

Provided and/or discovered by:
Alfredo Ortega, Core Security Technologies.

Changelog:
2006-12-18: Added CVE reference.
2007-02-14: Updated "From where" field.

Original Advisory:
http://www.coresecurity.com/?module=ContentMod&action=item&id=1594


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