CVE-2017-5388

Publication date 25 January 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A STUN server in conjunction with a large number of "webkitRTCPeerConnection" objects can be used to send large STUN packets in a short period of time due to a lack of rate limiting being applied on e10s systems, allowing for a denial of service attack. This vulnerability affects Firefox < 51.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	17.04 zesty	Fixed 52.0.1+build2-0ubuntu1
	16.10 yakkety	Fixed 51.0.1+build2-0ubuntu0.16.10.1
	16.04 LTS xenial	Fixed 51.0.1+build2-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 51.0.1+build2-0ubuntu0.14.04.1
	12.04 LTS precise	Fixed 51.0.1+build2-0ubuntu0.12.04.1
thunderbird	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not affected

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3175-1
Firefox vulnerabilities
27 January 2017