GLSA 200508-02: ProFTPD: Format string vulnerabilities
| Severity: | normal |
| Title: | ProFTPD: Format string vulnerabilities |
| Date: | 08/01/2005 |
| Bugs: | |
| 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 | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| net-ftp/proftpd | < 1.2.10-r7 | >= 1.2.10-r7 | 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:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-ftp/proftpd-1.2.10-r7"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.