ProFTPD TELNET_IAC Remote Code Execution VulnerabilityZDI-10-229: November 2nd, 2010
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10641. For further product information on the TippingPoint IPS:
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of ProFTPD. Authentication is not required to exploit this vulnerability.
The flaw exists within the proftpd server component which listens by default on TCP port 21. When reading user input if a TELNET_IAC escape sequence is encountered the process miscalculates a buffer length counter value allowing a user controlled copy of data to a stack buffer. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the proftpd process.
Vendor ResponseProFTPD states:
Patch committed to CVS with accompanying regression test, and backported to
2010-09-24 - Vulnerability reported to vendor
2010-11-02 - Coordinated public release of advisory
CreditThis vulnerability was discovered by: