CVE-2011-1575
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 33.3%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 2.0
- 5.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:N
- EPSS
- 33.34% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- pureftpd/pure-ftpd
- Source
- secalert@redhat.com
EPSS 33.3% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://archives.pureftpd.org/archives.cgi?100:mss:3906:201103:cpeojfkblajnpinkeadd
- http://archives.pureftpd.org/archives.cgi?100:mss:3910:201103:cpeojfkblajnpinkeaddPatch
- http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html
- http://lists.opensuse.org/opensuse-updates/2011-05/msg00029.html
- http://openwall.com/lists/oss-security/2011/04/11/14
- http://openwall.com/lists/oss-security/2011/04/11/3
- http://openwall.com/lists/oss-security/2011/04/11/7
- http://openwall.com/lists/oss-security/2011/04/11/8
- http://secunia.com/advisories/43988Vendor Advisory
- http://secunia.com/advisories/44548
- http://www.pureftpd.org/project/pure-ftpd/news
- https://bugzilla.novell.com/show_bug.cgi?id=686590Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=683221
- https://github.com/jedisct1/pure-ftpd/commit/65c4d4ad331e94661de763e9b5304d28698999c4Patch
- http://archives.pureftpd.org/archives.cgi?100:mss:3906:201103:cpeojfkblajnpinkeadd
- http://archives.pureftpd.org/archives.cgi?100:mss:3910:201103:cpeojfkblajnpinkeaddPatch
- http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html
- http://lists.opensuse.org/opensuse-updates/2011-05/msg00029.html
- http://openwall.com/lists/oss-security/2011/04/11/14
- http://openwall.com/lists/oss-security/2011/04/11/3
- http://openwall.com/lists/oss-security/2011/04/11/7
- http://openwall.com/lists/oss-security/2011/04/11/8
- http://secunia.com/advisories/43988Vendor Advisory
- http://secunia.com/advisories/44548
- http://www.pureftpd.org/project/pure-ftpd/news
- https://bugzilla.novell.com/show_bug.cgi?id=686590Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=683221
- https://github.com/jedisct1/pure-ftpd/commit/65c4d4ad331e94661de763e9b5304d28698999c4Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.