Bug 1895075 (CVE-2020-8036)

Summary:	CVE-2020-8036 tcpdump: the tok2strbuf function was used by the SOME/IP dissector in an unsafe way
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	luhliari, mruprich, msehnout, msekleta, thozza
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tcpdump 4.10.0rc1	Doc Type:	If docs needed, set a value
Doc Text:	An out-of-bounds read vulnerability was discovered in tcpdump while printing SOME/IP packets captured in a pcap file or coming from the network. This flaw allows a remote attacker to send specially crafted packets that, when printed, can trigger the flaw and crash the application. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-11-19 17:28:32 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1895076
Bug Blocks:	1895083

Description Guilherme de Almeida Suckevicz 2020-11-05 17:06:09 UTC

The tok2strbuf() function in tcpdump 4.10.0-PRE-GIT was used by the SOME/IP dissector in an unsafe way.

Reference and upstream patch:
https://github.com/the-tcpdump-group/tcpdump/commit/e2256b4f2506102be2c6f7976f84f0d607c53d43

Comment 1 Guilherme de Almeida Suckevicz 2020-11-05 17:06:26 UTC

Created tcpdump tracking bugs for this issue:

Affects: fedora-all [bug 1895076]

Comment 2 Mauro Matteo Cascella 2020-11-19 15:18:34 UTC

Statement:

This issue did not affect the versions of `tcpdump` as shipped with Red Hat Enterprise Linux 5, 6, 7, and 8, as they did not include support for the SOME/IP dissector.

Comment 3 Product Security DevOps Team 2020-11-19 17:28:32 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-8036