Bug 1663929 - monit: Use-after-free in function _handleEvent()
Summary: monit: Use-after-free in function _handleEvent()
Keywords:
Status: CLOSED UPSTREAM
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1663930 1663931
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-01-07 10:21 UTC by Andrej Nemec
Modified: 2019-09-29 15:04 UTC (History)
3 users (show)

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Last Closed: 2019-06-10 10:44:45 UTC

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Description Andrej Nemec 2019-01-07 10:21:37 UTC 
Monit may crash if "unmonitor" or "stop" action was triggered by some test: the _handleAction() will call Util_monitorUnset() which frees the service events list, including the current event which triggered the action. The reset of the state_change flag (which is not necessary) then dereferenced a freed event.

References:

https://bitbucket.org/tildeslash/monit/issues/764/use-after-free-in-function-_handleevent
https://seclists.org/oss-sec/2018/q4/274

Upstream patch:

https://bitbucket.org/tildeslash/monit/commits/5827927c4623
Comment 1 Andrej Nemec 2019-01-07 10:21:47 UTC 
Created monit tracking bugs for this issue:

Affects: epel-all [bug 1663931]
Affects: fedora-all [bug 1663930]
Comment 2 Product Security DevOps Team 2019-06-10 10:44:45 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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