Gentoo Linux Security Advisory GLSA 200403-08
Severity: Normal
Title: oftpd DoS vulnerability
Date: March 29, 2004
Bugs: #45738
ID: 200403-08
Synopsis
A remotely-exploitable overflow exists in oftpd, allowing an
attacker to crash the oftpd daemon.
Background
Quote from http://www.time-travellers.org/oftpd/
“oftpd is designed to be as secure as an anonymous FTP server
can possibly be. It runs as non-root for most of the time, and uses
the Unix chroot() command to hide most of the systems directories
from external users – they cannot change into them even if the
server is totally compromised! It contains its own directory change
code, so that it can run efficiently as a threaded server, and its
own directory listing code (most FTP servers execute the system
“ls” command to list files).”
Affected packages
| Package | Vulnerable | Unaffected |
| net-ftp/oftpd | <= 0.3.6 | >= 0.3.7 |
Description
Issuing a port command with a number higher than 255 causes the
server to crash. The port command may be issued before any
authentication takes place, meaning the attacker does not need to
know a valid username and password in order to exploit this
vulnerability.
Impact
This exploit causes a denial of service.
Workaround
While a workaround is not currently known for this issue, all
users are advised to upgrade to the latest version of the affected
package.
Resolution
All users should upgrade to the current version of the affected
package:
# emerge sync
# emerge -pv ">=net-ftp/oftpd-0.3.7"
# emerge ">=net-ftp/oftpd-0.3.7"
References
[ 1 ] http://www.time-travellers.org/oftpd/oftpd-dos.html
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 http://bugs.gentoo.org.
Gentoo Linux Security Advisory GLSA 200403-09
Severity: High
Title: Buffer overflow in Midnight Commander
Date: March 29, 2004
Bugs: #45957
ID: 200403-09
Synopsis
A remotely-exploitable buffer overflow in Midnight Commander
allows arbitrary code to be run on a user’s computer
Background
Midnight Commander is a visual file manager.
Affected packages
| Package | Vulnerable | Unaffected |
| app-misc/mc | <= 4.6.0-r4 | >= 4.6.0-r5 |
Description
A stack-based buffer overflow has been found in Midnight
Commander’s virtual filesystem.
Impact
This overflow allows an attacker to run arbitrary code on the
user’s computer during the symlink conversion process.
Workaround
While a workaround is not currently known for this issue, all
users are advised to upgrade to the latest version of the affected
package.
Resolution
All users should upgrade to the current version of the affected
package:
# emerge sync
# emerge -pv ">=app-misc/mc-4.6.0-r5"
# emerge ">=app-misc/mc-4.6.0-r5"
References
[ 1 ] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-1023
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 http://bugs.gentoo.org.