Improper neutralization of special elements used in an sql command ('sql injection') in ProFTPD

1) Improper neutralization of special elements used in an sql command ('sql injection')

EUVDB-ID: #VU111813

Risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2009-0543

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

ProFTPD Server 1.3.1, with NLS support enabled, allows remote attackers to bypass SQL injection protection mechanisms via invalid, encoded multibyte characters, which are not properly handled in (1) mod_sql_mysql and (2) mod_sql_postgres.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

ProFTPD: All versions

CPE2.3

• cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:*

External links

https://bugs.proftpd.org/show_bug.cgi?id=3173
https://secunia.com/advisories/34268
https://security.gentoo.org/glsa/glsa-200903-27.xml
https://www.debian.org/security/2009/dsa-1730
https://www.mandriva.com/security/advisories?name=MDVSA-2009:061
https://www.openwall.com/lists/oss-security/2009/02/11/4
https://www.openwall.com/lists/oss-security/2009/02/11/5

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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. However, proof of concept for this vulnerability is available.