Bug 1895075 (CVE-2020-8036) - CVE-2020-8036 tcpdump: the tok2strbuf function was used by the SOME/IP dissector in an unsafe way
Summary: CVE-2020-8036 tcpdump: the tok2strbuf function was used by the SOME/IP dissec...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-8036
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1895076
Blocks: 1895083
TreeView+ depends on / blocked
 
Reported: 2020-11-05 17:06 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-09-23 14:13 UTC (History)
5 users (show)

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.
Clone Of:
Environment:
Last Closed: 2020-11-19 17:28:32 UTC
Embargoed:

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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
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