Bug 1490578 – CVE-2017-13011 tcpdump: Buffer overflow in util-print.c:bittok2str_internal()

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Bug 1490578 - (CVE-2017-13011) CVE-2017-13011 tcpdump: Buffer overflow in util-print.c:bittok2str_internal()

Summary:	CVE-2017-13011 tcpdump: Buffer overflow in util-print.c:bittok2str_internal()

Status:	CLOSED WONTFIX

Aliases:	CVE-2017-13011

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20170913,repor...
Keywords:	Security

Depends On:	1475364 1490717 1491082
Blocks:	1490633
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Reported:	2017-09-11 17:52 EDT by Adam Mariš
Modified:	2018-05-16 04:36 EDT (History)
CC List:	8 users (show)

See Also:
Fixed In Version:	tcpdump 4.9.2
Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in tcpdump's verbose printing of packet data. A crafted pcap file or specially crafted network traffic could cause tcpdump to write out of bounds in the BSS segment, potentially causing tcpdump to display truncated or incorrectly decoded fields or crash with a segmentation violation. This does not affect tcpdump when used with the -w option to save a pcap file.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2017-09-14 03:40:34 EDT
Type:	---
Regression:	---
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Documentation:	---
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2017-09-11 17:52:24 EDT

Buffer overflow in util-print.c:bittok2str_internal() 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 17:52:28 EDT

Acknowledgments:

Name: the Tcpdump project

Comment 11 Doran Moppert 2017-09-14 00:35:34 EDT

Created tcpdump tracking bugs for this issue:

Affects: fedora-all [bug 1475364]

Comment 14 Doran Moppert 2018-05-15 22:56:19 EDT

This issue was addressed in Red Hat Enterprise Linux 7 via RHEA-2018:0705, which rebased tcpdump to 4.9.2:

https://access.redhat.com/errata/RHEA-2018:0705

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