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Bug 1473234 - (CVE-2017-10966) CVE-2017-10966 irssi: Use-after-free while updating the internal nick list
CVE-2017-10966 irssi: Use-after-free while updating the internal nick list
Status: CLOSED WONTFIX
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20170705,reported=2...
: Security
Depends On:
Blocks: 1473235
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Reported: 2017-07-20 05:35 EDT by Andrej Nemec
Modified: 2017-07-24 05:51 EDT (History)
4 users (show)

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Fixed In Version: irssi 1.0.4
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Last Closed: 2017-07-24 05:51:08 EDT
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Description Andrej Nemec 2017-07-20 05:35:36 EDT 
An issue was discovered in Irssi. While updating the internal nick list, Irssi could incorrectly use the GHashTable interface and free the nick while updating it. This would then result in use-after-free conditions on each access of the hash table.

Upstream patch:

https://github.com/irssi/irssi/commit/5e26325317c72a04c1610ad952974e206384d291

External References:

https://irssi.org/security/irssi_sa_2017_07.txt
Comment 1 Cedric Buissart 2017-07-24 05:50:48 EDT 
Lowering severity based on the fact that a rogue IRC server would be needed to take advantage of the vulnerability.
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