Bug 1796459 (CVE-2020-7044) - CVE-2020-7044 wireshark: WASSP dissector crash (wnpa-sec-2020-01)
Summary: CVE-2020-7044 wireshark: WASSP dissector crash (wnpa-sec-2020-01)
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2020-7044
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1796460
Blocks: 1796462
TreeView+ depends on / blocked
 
Reported: 2020-01-30 13:31 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-02-16 20:42 UTC (History)
8 users (show)

Fixed In Version: wireshark 3.2.1
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Environment:
Last Closed: 2020-02-11 14:09:40 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2020-01-30 13:31:32 UTC 
In Wireshark 3.2.x before 3.2.1, the WASSP dissector could crash. This was addressed in epan/dissectors/packet-wassp.c by using >= and <= to resolve off-by-one errors.

References:
https://www.wireshark.org/security/wnpa-sec-2020-01.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=16324

Upstream commit:
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=f90a3720b73ca140403315126e2a478c4f70ca03
Comment 1 Guilherme de Almeida Suckevicz 2020-01-30 13:31:47 UTC 
Created wireshark tracking bugs for this issue:

Affects: fedora-all [bug 1796460]
Comment 2 Riccardo Schirone 2020-02-11 09:56:09 UTC 
The vulnerable code was added in https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=c7854720c805ad3b96c1ceecff3be547f5748830, which extends the WASSP dissector. The commit first appeared in wireshark v3.1.0.
Comment 3 Riccardo Schirone 2020-02-11 09:57:44 UTC 
Statement:

This issue did not affect the versions of wireshark as shipped with Red Hat Enterprise Linux 7, and 8 as they did not include the vulnerable code.
Comment 4 Product Security DevOps Team 2020-02-11 14:09:40 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-2020-7044
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