Bug 141547 - When application Nessus is running. cupsd starts to take more and more CPU, until hangs the application.
When application Nessus is running. cupsd starts to take more and more CPU, u...
Product: Fedora
Classification: Fedora
Component: cups (Show other bugs)
i586 Linux
medium Severity medium
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Assigned To: Tim Waugh
Depends On:
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Reported: 2004-12-01 17:38 EST by Mikhail Utin
Modified: 2007-11-30 17:10 EST (History)
1 user (show)

See Also:
Fixed In Version: FC4
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2005-09-09 09:57:58 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Mikhail Utin 2004-12-01 17:38:30 EST
Description of problem:

Version-Release number of selected component (if applicable):

How reproducible: always

Steps to Reproduce:
1. Use Nussus vulnerability scanner, may be other applications
2. Start scanning (localhost)
3. If cupsd stopped, the application continues working
4. If cupsd disabled, the application works OK, no problem
Actual results:

Expected results:

Additional info:
Comment 1 Tim Waugh 2004-12-02 11:52:41 EST
This is quite vague -- can you be more specific please?

Does printing still work after you use Nessus?
Comment 2 Rainer Kraft 2005-05-13 12:04:16 EDT
I have the same problem. Printing stops also. I cannot even kill cupsd with kill
-15, I have to kill it hard with kill -9. All my CUPS instances show this behaviour.

This is a serious security issue. It's very easy to take a CUPS print daemon
down by overloading the WebGui with a scanner like Nessus.

Comment 3 Tim Waugh 2005-05-19 08:30:07 EDT
Please provide specific details so that I can analyze this problem properly. 
Does this only work from localhost?  What messages are written to error_log? 
What does 'gdb' say the stack trace is at that point?  etc etc etc.
Comment 4 Rainer Kraft 2005-05-19 12:28:07 EDT
I've upgraded CUPS to 1.1.23 and now it's much more stable and it survives the
Nessus scans. If not, I will update you with the needed information.

But basically: It scanned over the network, so it's not localhost. There are no
messages written to error_log and I've not used gdb for a stack trace.

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