CVE-2017-7752

Publication date 14 June 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A use-after-free vulnerability during specific user interactions with the input method editor (IME) in some languages due to how events are handled. This results in a potentially exploitable crash but would require specific user interaction to trigger. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
thunderbird	17.04 zesty	Fixed 1:52.2.1+build1-0ubuntu0.17.04.1
	16.10 yakkety	Fixed 1:52.2.1+build1-0ubuntu0.16.10.1
	16.04 LTS xenial	Fixed 1:52.2.1+build1-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 1:52.2.1+build1-0ubuntu0.14.04.1
firefox	17.04 zesty	Fixed 54.0+build3-0ubuntu0.17.04.1
	16.10 yakkety	Fixed 54.0+build3-0ubuntu0.16.10.1
	16.04 LTS xenial	Fixed 54.0+build3-0ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 54.0+build3-0ubuntu0.14.04.1

Severity score breakdown

CVSS version: CVSS v3.0

Base score 8.8 · High

Base metrics

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

Scores

Parameter	Value
Base score	8.8 · High
Exploitability score	-
Impact score	-

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

References

Related Ubuntu Security Notices (USN)

USN-3315-1
Firefox vulnerabilities
15 June 2017

USN-3321-1
Thunderbird vulnerabilities
5 July 2017