CVE-2016-4421

Publication date 1 May 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

epan/dissectors/packet-ber.c in the ASN.1 BER dissector in Wireshark 1.12.x before 1.12.10 and 2.x before 2.0.2 allows remote attackers to cause a denial of service (deep recursion, stack consumption, and application crash) via a packet that specifies deeply nested data.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
wireshark	18.04 LTS bionic	Fixed 2.6.3-1~ubuntu18.04.1
	17.10 artful	Not affected
	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Fixed 2.6.3-1~ubuntu16.04.1
	15.10 wily	Ignored end of life
	14.04 LTS trusty	Fixed 2.6.3-1~ubuntu14.04.1
	12.04 LTS precise	Ignored end of life

Notes

sbeattie

might not affect wireshark before 1.12.x

Severity score breakdown

CVSS version: CVSS v3.0

Base score 5.9 · Medium

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	None
Integrity impact	None
Availability impact	High

Scores

Parameter	Value
Base score	5.9 · Medium
Exploitability score	-
Impact score	-

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