CVE-2018-6836

Publication date 8 February 2018

Last updated 17 July 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

Description

The netmonrec_comment_destroy function in wiretap/netmon.c in Wireshark through 2.4.4 performs a free operation on an uninitialized memory address, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact.

Status

Package Ubuntu Release Status
wireshark 18.04 LTS bionic
Fixed 2.6.3-1~ubuntu18.04.1
17.10 artful Ignored end of life
16.04 LTS xenial
Fixed 2.6.3-1~ubuntu16.04.1
14.04 LTS trusty
Fixed 2.6.3-1~ubuntu14.04.1

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Other references