CVE-2011-1575

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    CVE-2011-1575

    Published: 23 May 2011Last Modified: 10 Apr 2026

    Summary:

    Details: 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.

    References: http://secunia.com/advisories/43988, http://secunia.com/advisories/44548, http://archives.pureftpd.org/archives.cgi?100:mss:3910:201103:cpeojfkblajnpinkeadd, https://bugzilla.novell.com/show_bug.cgi?id=686590, https://github.com/jedisct1/pure-ftpd/commit/65c4d4ad331e94661de763e9b5304d28698999c4, https://bugzilla.redhat.com/show_bug.cgi?id=683221, http://archives.pureftpd.org/archives.cgi?100:mss:3906:201103:cpeojfkblajnpinkeadd, 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://www.pureftpd.org/project/pure-ftpd/news

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High