Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2011-1575

Severity CVSS v4.0:
Pending analysis
Type:
CWE-399 Resource Management Errors
Publication date:
23/05/2011
Last modified:
11/04/2025

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.

Impact

Vector 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): None

Base Score 2.0
5.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:pureftpd:pure-ftpd:*:*:*:*:*:*:*:* 1.0.29 (including)
cpe:2.3:a:pureftpd:pure-ftpd:0.90:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.91:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.92:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.93:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.94:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.95:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.95-pre1:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.95-pre2:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.95-pre3:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.95-pre4:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.95.1:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.95.2:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.96:*:*:*:*:*:*:*
cpe:2.3:a:pureftpd:pure-ftpd:0.96.1:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools