Bug 1667579 (CVE-2019-5716) - CVE-2019-5716 wireshark: reachable assertion in fast_ensure_contiguous() from 6LoWPAN dissector
Summary: CVE-2019-5716 wireshark: reachable assertion in fast_ensure_contiguous() from...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2019-5716
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: 1667580 1686900
Blocks: 1667594
TreeView+ depends on / blocked
 
Reported: 2019-01-18 21:37 UTC by Laura Pardo
Modified: 2021-06-29 20:53 UTC (History)
1 user (show)

Fixed In Version: wireshark 2.6.6
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Last Closed: 2021-06-29 20:53:57 UTC
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Description Laura Pardo 2019-01-18 21:37:21 UTC 
In Wireshark 2.6.0 to 2.6.5, the 6LoWPAN dissector could crash. This was addressed in epan/dissectors/packet-6lowpan.c by avoiding use of a TVB before its creation.


References:
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15217
https://www.wireshark.org/security/wnpa-sec-2019-01.html

Upstream Patch:
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=2b2eea1793dbff813896e1ae9dff1bedb39ee010
Comment 1 Laura Pardo 2019-01-18 21:37:32 UTC 
Created wireshark tracking bugs for this issue:

Affects: fedora-all [bug 1667580]
Comment 2 Riccardo Schirone 2019-03-08 15:50:47 UTC 
A reachable assertion was found in fast_ensure_contiguous() function in epan/tvbuff.c file, when called from the dissect_6lowpan() function.
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