CVE-2017-7749

Publication date 14 June 2017

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

Description

A use-after-free vulnerability when using an incorrect URL during the reloading of a docshell. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

Status

Package Ubuntu Release Status
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
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

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

References

Related Ubuntu Security Notices (USN)

    • USN-3321-1
    • Thunderbird vulnerabilities
    • 5 July 2017

Other references