Bug 152918
| Summary: | CAN-2005-0256 wu-ftpd DoS | ||
|---|---|---|---|
| Product: | [Retired] Fedora Legacy | Reporter: | Marc Deslauriers <marc.deslauriers> |
| Component: | wu-ftpd | Assignee: | Fedora Legacy Bugs <bugs> |
| Status: | CLOSED NOTABUG | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | low | ||
| Version: | rhl7.3 | CC: | mschout |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| URL: | http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0256 | ||
| Whiteboard: | LEGACY, rh73 | ||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2005-06-11 23:19:29 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
David Lawrence
2005-03-30 23:32:05 UTC
wu-ftpd in current updates appears not to be vulnerable to this.
wu_fnmatch() has this code:
case '*':
c = *pattern;
while (c == '*')
c = *++pattern;
What that is doing is collapsing/skipping over multiple '*' characters in a row
. This is happening BEFORE the recursive call to wu_fnmatch()
This is mentioned in:
https://bugzilla.redhat.com/beta/show_bug.cgi?id=149720
And 2 people have reported that they are not able to reproduce the problem.
I wrote a Net::FTP script in perl that logged in to a wu-ftpd server on a RHL
7.3 machine, and I had it do:
$ftp->dir('***********************************************************************************************************************************************************************************************.*');
as was suggested in the advisory. I had the script run this in a loop 1000
times. During that time, the system remained over 90% idle, and most of the
load was due to OTHER things happening on that machine. in.ftpd hovered around
1% CPU usage according to "top".
Given the above code, and backed up by the fact that people have reported that
they can not reproduce the problem, and the fact that I am unable to reproduce
it, I do not see how we are vulnerable to this one. Should we close this?
I'm closing this. It doesn't seem to apply. |