CVE-2018-6836
Publication date 8 February 2018
Last updated 17 July 2025
Ubuntu priority
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
|
| 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
CVSS version: CVSS v3.0
Base score
9.8 · Critical
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
Other references
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14397
- https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=28960d79cca262ac6b974f339697b299a1e28fef
- https://code.wireshark.org/review/#/c/25660/
- https://code.wireshark.org/review/#/c/25660/2/wiretap/netmon.c
- https://www.cve.org/CVERecord?id=CVE-2018-6836