Bug 1667592 (CVE-2019-5719) - CVE-2019-5719 wireshark: ISAKMP dissector crash in epan/dissectors/packet-isakmp.c
Summary: CVE-2019-5719 wireshark: ISAKMP dissector crash in epan/dissectors/packet-isa...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2019-5719
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: 1667593 1686923
Blocks: 1667594
TreeView+ depends on / blocked
 
Reported: 2019-01-18 22:00 UTC by Laura Pardo
Modified: 2021-06-29 20:56 UTC (History)
1 user (show)

Fixed In Version: wireshark 2.6.6, wireshark 2.4.12
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Last Closed: 2021-06-29 20:56:05 UTC
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Description Laura Pardo 2019-01-18 22:00:41 UTC 
In Wireshark 2.6.0 to 2.6.5 and 2.4.0 to 2.4.11, the ISAKMP dissector could crash. This was addressed in epan/dissectors/packet-isakmp.c by properly handling the case of a missing decryption data block.


References:
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15374
https://www.wireshark.org/security/wnpa-sec-2019-04.html

Upstream Patch:
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=b5b02f2a9b8772d8814096f86c60a32889d61f2c
Comment 1 Laura Pardo 2019-01-18 22:00:51 UTC 
Created wireshark tracking bugs for this issue:

Affects: fedora-all [bug 1667593]
Comment 3 Riccardo Schirone 2019-03-08 16:41:59 UTC 
Function dissect_transform() in packet-isakmp.c has a NULL pointer dereference flaw. The `decr` parameter may be NULL, but it is dereferenced without any check, thus leading to a crash.
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