CVE-2018-19623

Name: CVE-2018-19623
Creator: NVD / NIST
Published: 2018-11-29T04:29:00.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.15%

Last modified Jun 17, 2026

CVE-2018-19623 is a vulnerability of currently unknown severity. 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. EPSS estimates a 4.15% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

4.15%

89.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Wireshark	Wireshark	>= 2.4.0, <= 2.4.10
Wireshark	Wireshark	>= 2.6.0, <= 2.6.4
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
http://www.securityfocus.com/bid/106051Third Party Advisory, VDB Entry
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15132Exploit, Issue Tracking, Vendor Advisory
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=9c8645ec7b28e4d7193962ecd2a418613bf6a84f
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2018/dsa-4359Mailing List, Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.wireshark.org/security/wnpa-sec-2018-53.htmlVendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
http://www.securityfocus.com/bid/106051Third Party Advisory, VDB Entry
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15132Exploit, Issue Tracking, Vendor Advisory
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=9c8645ec7b28e4d7193962ecd2a418613bf6a84f
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2018/dsa-4359Mailing List, Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.wireshark.org/security/wnpa-sec-2018-53.htmlVendor Advisory

Timeline

Published: Nov 29, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-19623?

How severe is CVE-2018-19623?

Severity scoring for CVE-2018-19623 is pending analysis. The EPSS model estimates a 4.15% probability of exploitation in the next 30 days.

How do I fix CVE-2018-19623?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-19623?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST