CVE-2017-7813

Publication date 2 October 2017

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

8.2 · High

Score breakdown

Description

Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from memory if it matches JavaScript identifier syntax. This vulnerability affects Firefox < 56.

Read the notes from the security team

Status

Package Ubuntu Release Status
firefox 24.04 LTS noble
Fixed 56.0+build6-0ubuntu1
23.10 mantic
Fixed 56.0+build6-0ubuntu1
23.04 lunar
Fixed 56.0+build6-0ubuntu1
22.10 kinetic
Fixed 56.0+build6-0ubuntu1
22.04 LTS jammy
Fixed 56.0+build6-0ubuntu1
21.10 impish
Fixed 56.0+build6-0ubuntu1
21.04 hirsute
Fixed 56.0+build6-0ubuntu1
20.10 groovy
Fixed 56.0+build6-0ubuntu1
20.04 LTS focal
Fixed 56.0+build6-0ubuntu1
19.10 eoan
Fixed 56.0+build6-0ubuntu1
19.04 disco
Fixed 56.0+build6-0ubuntu1
18.10 cosmic
Fixed 56.0+build6-0ubuntu1
18.04 LTS bionic
Fixed 56.0+build6-0ubuntu1
17.10 artful
Fixed 56.0+build6-0ubuntu1
17.04 zesty
Fixed 56.0+build6-0ubuntu0.17.04.1
16.04 LTS xenial
Fixed 56.0+build6-0ubuntu0.16.04.1
14.04 LTS trusty
Fixed 56.0+build6-0ubuntu0.14.04.1
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
mozjs52 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 affected
20.04 LTS focal
Not affected
19.10 eoan
Not affected
19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Not affected
17.10 artful
Not affected
17.04 zesty Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

Notes

tyhicks

mozjs contains a copy of the SpiderMonkey JavaScript engine

Severity score breakdown

Parameter Value
Base score 8.2 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3435-1
    • Firefox vulnerabilities
    • 2 October 2017

Other references