Bug 1655933 (CVE-2018-19623) - CVE-2018-19623 wireshark: Heap buffer overflow in packet-lbmpdm.c:dissect_segment_ofstable() allows denial of service or possibly arbitrary code execution
Summary: CVE-2018-19623 wireshark: Heap buffer overflow in packet-lbmpdm.c:dissect_seg...
Alias: CVE-2018-19623
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1655944 1656342
Blocks: 1655948
TreeView+ depends on / blocked
Reported: 2018-12-04 09:47 UTC by Andrej Nemec
Modified: 2021-02-16 22:43 UTC (History)
7 users (show)

Fixed In Version: wireshark 2.6.5, wireshark 2.4.11
Doc Type: If docs needed, set a value
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Clone Of:
Last Closed: 2019-07-12 13:06:17 UTC

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Description Andrej Nemec 2018-12-04 09:47:27 UTC
In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the LBMPDM dissector could crash. In addition, a remote attacker could write arbitrary data to any memory locations before the packet-scoped memory. This was addressed in epan/dissectors/packet-lbmpdm.c by disallowing certain negative values.

Upstream issue:


Upstream patch:


External References:


Comment 1 Andrej Nemec 2018-12-04 10:01:33 UTC
Created wireshark tracking bugs for this issue:

Affects: fedora-all [bug 1655944]

Comment 2 Adam Mariš 2018-12-05 09:40:41 UTC
This issue affects wireshark since version 1.11.3 where dissector for Latency Busters Messaging was introduced.

Comment 4 Adam Mariš 2018-12-05 09:45:16 UTC

This issue did not affect the versions of wireshark as shipped with Red Hat Enterprise Linux 5, 6 and 7 as they did not include LBMPDM dissector where the vulnerability occurred.

Comment 6 Product Security DevOps Team 2019-07-12 13:06:17 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


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