Stack-based buffer overflow in ProFTPD - CVE-2010-4221
Published: September 15, 2011 / Updated: June 23, 2025
Vulnerability identifier: #VU111809
CSH Severity: High
CVSS v4.0:
CVE-ID: CVE-2010-4221
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: ProFTPD
Affected software:
ProFTPD
ProFTPD
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing vectors involving a TELNET IAC escape character to a (1) FTP or (2) FTPS server. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2010-4221
Install update from vendor's website.
Sources
- http://bugs.proftpd.org/show_bug.cgi?id=3521
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/050687.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/050703.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-November/050726.html
- http://secunia.com/advisories/42052
- http://secunia.com/advisories/42217
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:227
- http://www.proftpd.org/docs/NEWS-1.3.3c
- http://www.securityfocus.com/bid/44562
- http://www.vupen.com/english/advisories/2010/2941
- http://www.vupen.com/english/advisories/2010/2959
- http://www.vupen.com/english/advisories/2010/2962
- http://www.zerodayinitiative.com/advisories/ZDI-10-229/