Bug 1490540 - (CVE-2017-12894) CVE-2017-12894 tcpdump: Buffer over-read in addrtoname.c:lookup_bytestring()
CVE-2017-12894 tcpdump: Buffer over-read in addrtoname.c:lookup_bytestring()
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
low Severity low
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Assigned To: Red Hat Product Security
: Security
Depends On: 1475364
Blocks: 1490633
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Reported: 2017-09-11 17:47 EDT by Adam Mariš
Modified: 2018-05-16 04:18 EDT (History)
7 users (show)

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Fixed In Version: tcpdump 4.9.2
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Last Closed: 2017-09-12 23:42:29 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2017-09-11 17:47:41 EDT
Buffer over-read in addrtoname.c:lookup_bytestring() was found.

This vulnerability can be exploited in two ways. The first is to produce a .pcap file with crafted packet(s) for the protocol(s) concerned and make the target system try to decode the file using tcpdump. The second is to send specially crafted packet(s) to the network segment where the target system is running a tcpdump process that is decoding a live packet capture. In the latter case it depends on the specific network protocol if the crafted packet(s) may be sent from the local segment only or from a remote Internet host.
Comment 1 Adam Mariš 2017-09-11 17:47:45 EDT

Name: the Tcpdump project
Comment 3 Doran Moppert 2017-09-14 00:37:57 EDT
Created tcpdump tracking bugs for this issue:

Affects: fedora-all [bug 1475364]
Comment 4 Doran Moppert 2018-05-15 22:46:19 EDT
This issue was addressed in Red Hat Enterprise Linux 7 via RHEA-2018:0705, which rebased tcpdump to 4.9.2:


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