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On 2007-11-09T01:51:23+00:00 Nathan wrote:

Description of problem:
pidgin crashes on login to a silc account. I tried setting it up fresh, and from
old setup. Both caused the crash.

Version-Release number of selected component (if applicable):
pidgin-2.2.2-1.fc8.x86_64

How reproducible:
Everytime

Steps to Reproduce:
1. Install pidgin
2. Run pidgin
3. Setup silc account
  
Actual results:
Crash

Expected results:
Runs normally

Additional info:
If run from a terminal window it mentions a buffer overflow.

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/0

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On 2007-11-26T21:40:18+00:00 luca wrote:

I can confirm this odd behavior that happens just with silc accounts.
A workaround for this problem is to downgrade to libsilc-1.0.2-2.fc6, the one
installed by default under fedora 7. 
This suggest to me that the problem could be in libsilc itself but I didn't
investigate deeper.


Reply at: 
https://bugs.launchpad.net/ubuntu/+source/silc-toolkit/+bug/202752/comments/1

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On 2008-01-04T03:04:16+00:00 Stu wrote:

I think we'll need a backtrace with both pidgin-debuginfo and libsilc-debuginfo
installed to be able to get anywhere with this.

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/2

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On 2008-01-06T15:07:58+00:00 luca wrote:

Created attachment 290915
Backtrace with debuginfo

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/3

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On 2008-01-06T18:13:35+00:00 Stu wrote:

This appears to be a libsilc problem, could you please try this libsilc package
to see if the crash is fixed, and if you are now able to log in to silc?
http://koji.fedoraproject.org/scratch/nosnilmot/task_328484/

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/4

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On 2008-01-06T21:56:19+00:00 luca wrote:

This seems to solve the problem for me. Now I can log in to silc without
crashing pidgin anymore.

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/5

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On 2008-01-26T15:42:54+00:00 Fedora wrote:

libsilc-1.0.2-5.fc7 has been submitted as an update for Fedora 7

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/6

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On 2008-01-26T15:42:57+00:00 Fedora wrote:

libsilc-1.0.2-5.fc8 has been submitted as an update for Fedora 8

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/7

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On 2008-01-27T07:14:10+00:00 Fedora wrote:

libsilc-1.0.2-5.fc8 has been pushed to the Fedora 8 testing repository.  If 
problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update libsilc'.  You can provide 
feedback for this update here: 
http://admin.fedoraproject.org/F8/FEDORA-2008-1041

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/8

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On 2008-02-28T21:35:52+00:00 Fedora wrote:

libsilc-1.0.2-5.fc8 has been pushed to the Fedora 8 stable repository.
If problems still persist, please make note of it in this bug report.

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/9

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On 2008-02-28T21:46:11+00:00 Fedora wrote:

libsilc-1.0.2-5.fc7 has been pushed to the Fedora 7 stable repository.
If problems still persist, please make note of it in this bug report.

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/10

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On 2008-03-11T21:01:54+00:00 Lubomir wrote:

I'm not convinced the contents of the buffer are in attacker's control; did
anyone conduct some investigation?

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/11

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On 2008-03-20T16:41:16+00:00 Stu wrote:

(In reply to comment #11)
> I'm not convinced the contents of the buffer are in attacker's control; did
> anyone conduct some investigation?

I asked this of upstream and the reply was:
> I'm not sure but I think this wasn't so serious.  I never got it crash myself.

Reply at: https://bugs.launchpad.net/ubuntu/+source/silc-
toolkit/+bug/202752/comments/16


** Changed in: silc-toolkit (Fedora)
   Importance: Unknown => Low

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https://bugs.launchpad.net/bugs/202752

Title:
  [CVE-2008-1227] Stack-based buffer overflow causes DoS

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