CVE-2017-7784

Publication date 10 August 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 can occur when reading an image observer during frame reconstruction after the observer has been freed. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

Read the notes from the security team

Status

Package Ubuntu Release Status
firefox 24.04 LTS noble
Fixed 55.0.2+build1-0ubuntu4
23.10 mantic
Fixed 55.0.2+build1-0ubuntu4
23.04 lunar
Fixed 55.0.2+build1-0ubuntu4
22.10 kinetic
Fixed 55.0.2+build1-0ubuntu4
22.04 LTS jammy
Fixed 55.0.2+build1-0ubuntu4
21.10 impish
Fixed 55.0.2+build1-0ubuntu4
21.04 hirsute
Fixed 55.0.2+build1-0ubuntu4
20.10 groovy
Fixed 55.0.2+build1-0ubuntu4
20.04 LTS focal
Fixed 55.0.2+build1-0ubuntu4
19.10 eoan
Fixed 55.0.2+build1-0ubuntu4
19.04 disco
Fixed 55.0.2+build1-0ubuntu4
18.10 cosmic
Fixed 55.0.2+build1-0ubuntu4
18.04 LTS bionic
Fixed 55.0.2+build1-0ubuntu4
17.10 artful
Fixed 55.0.2+build1-0ubuntu4
17.04 zesty
Fixed 55.0.1+build2-0ubuntu0.17.04.2
16.04 LTS xenial
Fixed 55.0.1+build2-0ubuntu0.16.04.2
14.04 LTS trusty
Fixed 55.0.1+build2-0ubuntu0.14.04.2
mozjs38 24.04 LTS noble Not in release
23.10 mantic Not in release
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 Not in release
20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Ignored
17.10 artful Ignored end of life
17.04 zesty Ignored end of life
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
thunderbird 24.04 LTS noble
Fixed 1:52.4.0+build1-0ubuntu2
23.10 mantic
Fixed 1:52.4.0+build1-0ubuntu2
23.04 lunar
Fixed 1:52.4.0+build1-0ubuntu2
22.10 kinetic
Fixed 1:52.4.0+build1-0ubuntu2
22.04 LTS jammy
Fixed 1:52.4.0+build1-0ubuntu2
21.10 impish
Fixed 1:52.4.0+build1-0ubuntu2
21.04 hirsute
Fixed 1:52.4.0+build1-0ubuntu2
20.10 groovy
Fixed 1:52.4.0+build1-0ubuntu2
20.04 LTS focal
Fixed 1:52.4.0+build1-0ubuntu2
19.10 eoan
Fixed 1:52.4.0+build1-0ubuntu2
19.04 disco
Fixed 1:52.4.0+build1-0ubuntu2
18.10 cosmic
Fixed 1:52.4.0+build1-0ubuntu2
18.04 LTS bionic
Fixed 1:52.4.0+build1-0ubuntu2
17.10 artful
Fixed 1:52.4.0+build1-0ubuntu2
17.04 zesty
Fixed 1:52.3.0+build1-0ubuntu0.17.04.1
16.04 LTS xenial
Fixed 1:52.3.0+build1-0ubuntu0.16.04.1
14.04 LTS trusty
Fixed 1:52.3.0+build1-0ubuntu0.14.04.1

Notes

tyhicks

mozjs38 contains a copy of the SpiderMonkey JavaScript engine

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-3391-1
    • Firefox vulnerabilities
    • 15 August 2017
    • USN-3416-1
    • Thunderbird vulnerabilities
    • 14 September 2017

Other references