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Slackware: 'wu-ftpd' vulnerability Print E-mail
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Posted by LinuxSecurity.com Team   
Slackware Upgraded WU-FTPD packages are available for Slackware 9.0 and-current. These fix a problem where an attacker could use aspecially crafted filename in conjunction with WU-FTPD'sconversion feature to execute arbitrary commands on the server.

[slackware-security]  WU-FTPD Security Advisory (SSA:2003-259-03)

Upgraded WU-FTPD packages are available for Slackware 9.0 and
-current.  These fix a problem where an attacker could use a
specially crafted filename in conjunction with WU-FTPD's
conversion feature (mostly used to compress files, or produce tar
archives) to execute arbitrary commands on the server.

In addition, a MAIL_ADMIN which has been found to be insecure has
been disabled.

We do not recommend deploying WU-FTPD in situations where security
is required.


Here are the details from the Slackware 9.0 ChangeLog:
+--------------------------+
Tue Sep 23 14:43:10 PDT 2003
pasture/dontuse/wu-ftpd/wu-ftpd-2.6.2-i486-3.tgz:  Fixed a security problem in
  /etc/ftpconversions (CVE-1999-0997).  There's also another hole in wu-ftpd
  which may be triggered if the MAIL_ADMIN feature (notifies the admin of
  anonymous uploads) is used, so MAIL_ADMIN has been disabled in this build.
  Also note that we've moved this from /pasture to /pasture/dontuse, which
  should tell you something.
  (* Security fix *)
+--------------------------+


WHERE TO FIND THE NEW PACKAGES:
+-----------------------------+

Updated package for Slackware 9.0: 
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/pasture/dontuse/wu-ftpd/wu-ftpd-2.6.2-i386-3.tgz

Updated package for Slackware -current: 
ftp://ftp.slackware.com/pub/slackware/slackware-current/pasture/dontuse/wu-ftpd/wu-ftpd-2.6.2-i486-3.tgz


MD5 SIGNATURES:
+-------------+

Slackware 9.0 package:
2585e5eb265708d0f74b7f00325aaf9f  wu-ftpd-2.6.2-i386-3.tgz

Slackware -current package:
fa6d5af10336187de5b84e5bb6b11a39  wu-ftpd-2.6.2-i486-3.tgz


INSTALLATION INSTRUCTIONS:
+------------------------+

Upgrade using upgradepkg (as root):
# upgradepkg wu-ftpd-2.6.2-i386-3.tgz



+-----+

Slackware Linux Security Team 
http://slackware.com/gpg-key
security@slackware.com

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