Bug 1550223 (CVE-2018-7183) - CVE-2018-7183 ntp: decodearr() can write beyond its buffer limit
Summary: CVE-2018-7183 ntp: decodearr() can write beyond its buffer limit
Alias: CVE-2018-7183
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1550228 1550229
Blocks: 1550226
TreeView+ depends on / blocked
Reported: 2018-02-28 19:48 UTC by Pedro Sampaio
Modified: 2021-10-21 19:57 UTC (History)
2 users (show)

Fixed In Version: ntp 4.2.8p11
Doc Type: If docs needed, set a value
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Clone Of:
Last Closed: 2021-10-21 19:57:21 UTC

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Description Pedro Sampaio 2018-02-28 19:48:09 UTC
ntpq is a monitoring and control program for ntpd. decodearr() is an internal function of ntpq that is used to -- wait for it -- decode an array in a response string when formatted data is being displayed. This is a problem in affected versions of ntpq if a maliciously-altered ntpd returns an array result that will trip this bug, or if a bad actor is able to read an ntpq request on its way to a remote ntpd server and forge and send a response before the remote ntpd sends its response. It's potentially possible that the malicious data could become injectable/executable code.



Comment 1 Pedro Sampaio 2018-02-28 19:51:33 UTC
Created ntp tracking bugs for this issue:

Affects: fedora-all [bug 1550228]

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