CVE-2018-7420

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.

7.5

CVSS

Severity: High

CVSS 3.0 •

CVSS 2.0 •

EPSS 2.10% Top 20%

Vendor Advisory wireshark.org Vendor Advisory wireshark.org

Affected: n/a n/a

References

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

Frequently Asked Questions

What is the severity of CVE-2018-7420?: CVE-2018-7420 has been scored as a high severity vulnerability.
How to fix CVE-2018-7420?: To fix CVE-2018-7420, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-7420 being actively exploited in the wild?: It is possible that CVE-2018-7420 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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