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[ GLSA 200508-02 ] ProFTPD: Format string vulnerabilities
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GLSA
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Joined: 12 May 2004
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PostPosted: Mon Aug 01, 2005 9:15 pm    Post subject: [ GLSA 200508-02 ] ProFTPD: Format string vulnerabilities Reply with quote

Gentoo Linux Security Advisory

Title: ProFTPD: Format string vulnerabilities (GLSA 200508-02)
Severity: normal
Exploitable: remote
Date: August 01, 2005
Bug(s): #100364
ID: 200508-02

Synopsis


Under specific circumstances, ProFTPD is vulnerable to format string
vulnerabilities, potentially resulting in the execution of arbitrary code.


Background


ProFTPD is a configurable GPL-licensed FTP server software.


Affected Packages

Package: net-ftp/proftpd
Vulnerable: < 1.2.10-r7
Unaffected: >= 1.2.10-r7
Architectures: All supported architectures


Description

"infamous42md" reported that ProFTPD is vulnerable to format
string vulnerabilities when displaying a shutdown message containing
the name of the current directory, and when displaying response
messages to the client using information retrieved from a database
using mod_sql.


Impact


A remote attacker could create a directory with a malicious name
that would trigger the format string issue if specific variables are
used in the shutdown message, potentially resulting in a Denial of
Service or the execution of arbitrary code with the rights of the user
running the ProFTPD server. An attacker with control over the database
contents could achieve the same result by introducing malicious
messages that would trigger the other format string issue when used in
server responses.


Workaround


Do not use the "%C", "%R", or "%U" in shutdown messages, and do
not set the "SQLShowInfo" directive.


Resolution


All ProFTPD users should upgrade to the latest version:
Code:
# emerge --sync
    # emerge --ask --oneshot --verbose ">=net-ftp/proftpd-1.2.10-r7"


References

CAN-2005-2390


Last edited by GLSA on Mon Mar 10, 2014 4:20 am; edited 3 times in total
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