CVE-2018-7420

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-02-23 · updated 2026-06-17

Description

In Wireshark 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4, the pcapng file parser could crash. This was addressed in wiretap/pcapng.c by adding a block-size check for sysdig event blocks.

Affected products

Debian Linux: 7.0, 8.0
Wireshark Foundation Wireshark: from 2.2.0 through 2.2.12; from 2.4.0 through 2.4.4

References

http://www.securityfocus.com/bid/103163
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14403
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=129e41f9f63885ad8224ef413c2860788fb9e849
https://lists.debian.org/debian-lts-announce/2018/04/msg00018.html
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html
https://www.wireshark.org/security/wnpa-sec-2018-11.html
http://www.securityfocus.com/bid/103163
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14403
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=129e41f9f63885ad8224ef413c2860788fb9e849
https://lists.debian.org/debian-lts-announce/2018/04/msg00018.html
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html
https://www.wireshark.org/security/wnpa-sec-2018-11.html

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