CVE-2016-5287

Publication date 25 October 2016

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

Description

A potentially exploitable use-after-free crash during actor destruction with service workers. This issue does not affect releases earlier than Firefox 49. This vulnerability affects Firefox < 49.0.2.

Read the notes from the security team

Status

Package Ubuntu Release Status
firefox 16.10 yakkety
Fixed 49.0.2+build2-0ubuntu0.16.10.2
16.04 LTS xenial
Fixed 49.0.2+build2-0ubuntu0.16.04.2
14.04 LTS trusty
Fixed 49.0.2+build2-0ubuntu0.14.04.1
12.04 LTS precise
Fixed 49.0.2+build2-0ubuntu0.12.04.1
thunderbird 16.10 yakkety
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
12.04 LTS precise
Not affected

Notes

sbeattie

firefox 49 contains commit that introduced issue

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.8 · Critical

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-3111-1
    • Firefox vulnerabilities
    • 27 October 2016

Other references

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