ProFTPD < 1.3.3g / 1.3.4 Response Pool Use-After-Free Code Execution

High Nessus Plugin ID 56956

Synopsis

The remote FTP server is affected by a code execution vulnerability.

Description

The remote host is using ProFTPD, a free FTP server for Unix and Linux.

According to its banner, the version of ProFTPD installed on the remote host is earlier than 1.3.3g or 1.3.4. As such, it is potentially affected by a code execution vulnerability due to how the server manages the response pool that is used to send responses from the server to the client. A remote, authenticated attacker could could leverage this issue to execute arbitrary code on the remote host, subject to the privileges of the user running the affected application.

Note that Nessus did not actually test for the flaw but instead has relied on the version in ProFTPD's banner.

Solution

Upgrade to ProFTPD version 1.3.3g / 1.3.4 or later.

See Also

http://www.zerodayinitiative.com/advisories/ZDI-11-328/

http://seclists.org/fulldisclosure/2011/Nov/174

http://bugs.proftpd.org/show_bug.cgi?id=3711

http://www.nessus.org/u?c4b46de4

http://www.nessus.org/u?3c33326d

Plugin Details

Severity: High

ID: 56956

File Name: proftpd_1_3_3g.nasl

Version: $Revision: 1.8 $

Type: remote

Family: FTP

Published: 2011/11/28

Modified: 2017/04/25

Dependencies: 10092

Risk Information

Risk Factor: High

CVSSv2

Base Score: 9

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:proftpd:proftpd

Required KB Items: ftp/proftpd, Settings/ParanoidReport

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2011/11/09

Vulnerability Publication Date: 2011/11/11

Reference Information

CVE: CVE-2011-4130

BID: 50631