CVE-2011-1575

Pure-FTPd <1.0.30 - Command Injection

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2011-1575. PoCs published by masamoon.

AI-analyzed exploit summary This script sends a crafted FTP command sequence to detect the presence of CVE-2011-1575, a vulnerability in ProFTPD's mod_tls module. It does not exploit the vulnerability but checks for the vulnerable behavior.

Description

The STARTTLS implementation in ftp_parser.c in Pure-FTPd before 1.0.30 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted FTP sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.

Exploits (1)

nomisec SCANNER
by masamoon · poc
https://github.com/masamoon/cve-2011-1575-poc

This script sends a crafted FTP command sequence to detect the presence of CVE-2011-1575, a vulnerability in ProFTPD's mod_tls module. It does not exploit the vulnerability but checks for the vulnerable behavior.

Classification
Scanner 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: ProFTPD with mod_tls (versions before 1.3.3c)
No auth needed
Prerequisites: Network access to the target FTP server
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (14)

Core 14
Core References
Mailing List mailing-list x_refsource_mlist
http://openwall.com/lists/oss-security/2011/04/11/14
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=683221
Mailing List mailing-list x_refsource_mlist
http://lists.opensuse.org/opensuse-updates/2011-05/msg00029.html
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/43988
Mailing List mailing-list x_refsource_mlist
http://openwall.com/lists/oss-security/2011/04/11/7
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/44548
Mailing List mailing-list x_refsource_mlist
http://openwall.com/lists/oss-security/2011/04/11/8
Mailing List mailing-list x_refsource_mlist
http://openwall.com/lists/oss-security/2011/04/11/3
Various Sources x_refsource_confirm
http://www.pureftpd.org/project/pure-ftpd/news

Scores

EPSS 0.3334
EPSS Percentile 98.2%

Details

CWE
CWE-399
Status published
Products (50)
pureftpd/pure-ftpd 0.90
pureftpd/pure-ftpd 0.91
pureftpd/pure-ftpd 0.92
pureftpd/pure-ftpd 0.93
pureftpd/pure-ftpd 0.94
pureftpd/pure-ftpd 0.95
pureftpd/pure-ftpd 0.95-pre1
pureftpd/pure-ftpd 0.95-pre2
pureftpd/pure-ftpd 0.95-pre3
pureftpd/pure-ftpd 0.95-pre4
... and 40 more
Published May 23, 2011
Tracked Since Feb 18, 2026