CVE-2019-6256

Publication date 14 January 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A Denial of Service issue was discovered in the LIVE555 Streaming Media libraries as used in Live555 Media Server 0.93. It can cause an RTSPServer crash in handleHTTPCmd_TunnelingPOST, when RTSP-over-HTTP tunneling is supported, via x-sessioncookie HTTP headers in a GET request and a POST request within the same TCP session. This occurs because of a call to an incorrect virtual function pointer in the readSocket function in GroupsockHelper.cpp.

From the Ubuntu Security Team

It was discovered that liveMedia incorrectly handled certain network sessions. An attacker could possibly use this issue to cause a denial of service.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
liblivemedia	23.04 lunar	Not in release
	22.10 kinetic	Not in release
	22.04 LTS jammy	Not in release
	21.10 impish	Not in release
	21.04 hirsute	Not in release
	20.10 groovy	Fixed 2018.11.26-1
	20.04 LTS focal	Fixed 2018.11.26-1
	19.10 eoan	Fixed 2018.11.26-1
	19.04 disco	Fixed 2018.11.26-1
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Fixed 2018.02.18-1ubuntu0.1~esm1
	16.04 LTS xenial	Fixed 2016.02.09-1ubuntu0.1~esm1
	14.04 LTS trusty	Not in release

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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