CVE-2018-19623

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-11-29 · updated 2026-06-17
Weakness: CWE-787

Description

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.

Affected products

Debian Linux: 8.0, 9.0
Wireshark Foundation Wireshark: from 2.4.0 through 2.4.10; from 2.6.0 through 2.6.4

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
http://www.securityfocus.com/bid/106051
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15132
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=9c8645ec7b28e4d7193962ecd2a418613bf6a84f
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html
https://www.debian.org/security/2018/dsa-4359
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.wireshark.org/security/wnpa-sec-2018-53.html
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
http://www.securityfocus.com/bid/106051
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15132
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=9c8645ec7b28e4d7193962ecd2a418613bf6a84f

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