CVE-2018-7420 — HIGH (7.5) — White Hats Nepal

Q: What is CVE-2018-7420?

CVE-2018-7420 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.

Q: How severe is CVE-2018-7420?

CVE-2018-7420 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2018-7420?

Check the references section above for vendor advisories and patch information. Affected products include: Wireshark Wireshark, Debian Debian Linux.

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Wireshark	Wireshark	>= 2.2.0, <= 2.2.12
Debian	Debian Linux	7.0

References

http://www.securityfocus.com/bid/103163Third Party AdvisoryVDB Entry
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14403Issue TrackingVendor Advisory
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=129e41f9
https://lists.debian.org/debian-lts-announce/2018/04/msg00018.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.htmlMailing ListThird Party Advisory
https://www.wireshark.org/security/wnpa-sec-2018-11.htmlVendor Advisory
http://www.securityfocus.com/bid/103163Third Party AdvisoryVDB Entry
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14403Issue TrackingVendor Advisory
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=129e41f9
https://lists.debian.org/debian-lts-announce/2018/04/msg00018.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.htmlMailing ListThird Party Advisory
https://www.wireshark.org/security/wnpa-sec-2018-11.htmlVendor Advisory

FAQ

What is CVE-2018-7420?

CVE-2018-7420 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.

How severe is CVE-2018-7420?

CVE-2018-7420 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-7420?

Check the references section above for vendor advisories and patch information. Affected products include: Wireshark Wireshark, Debian Debian Linux.