Use-after-free in ProFTPD

1) Use-after-free

EUVDB-ID: #VU32845

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:L/PR:/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2011-4130

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing vectors involving an error that occurs after an FTP data transfer. A remote authenticated users can execute arbitrary code.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update to version 1.3.3g.

Vulnerable software versions

ProFTPD: 1.3.0 - 1.3.3f

External links

http://bugs.proftpd.org/show_bug.cgi?id=3711
http://www.proftpd.org/docs/NEWS-1.3.3g
http://www.securityfocus.com/bid/50631
http://www.zerodayinitiative.com/advisories/ZDI-11-328/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.