Bug 1316554 - (CVE-2016-2147) CVE-2016-2147 busybox: out of bounds write (heap) due to integer underflow in udhcpc
CVE-2016-2147 busybox: out of bounds write (heap) due to integer underflow in...
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=20160310,reported=2...
: Security
Depends On: 1316558
Blocks: 1316559
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Reported: 2016-03-10 08:17 EST by Martin Prpič
Modified: 2016-03-11 04:25 EST (History)
3 users (show)

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Doc Type: Bug Fix
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Last Closed: 2016-03-11 04:25:16 EST
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Description Martin Prpič 2016-03-10 08:17:20 EST
An out of bound write was discovered in udhcpc when parsing the Domain Search option. An attacker could send a maliciously crafted packet answering a DHCP request triggering a denial of service on the client.
Comment 1 Martin Prpič 2016-03-10 08:17:29 EST
Acknowledgments:

Name: Nico Golde (Qualcomm Product Security Initiative)
Comment 2 Martin Prpič 2016-03-10 08:21:08 EST
Created busybox tracking bugs for this issue:

Affects: fedora-all [bug 1316558]
Comment 3 Cedric Buissart 2016-03-11 04:04:13 EST
Upstream fix :
 - udhcp: fix a SEGV on malformed RFC1035-encoded domain name
https://git.busybox.net/busybox/commit/?id=d474ffc

and a minor regression :
 - udhcpc: fix a warning in debug code
https://git.busybox.net/busybox/commit/?id=1b7c17

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