CVE-2017-7831

Publication date 15 November 2017

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.3 · Medium

Score breakdown

Description

A vulnerability where the security wrapper does not deny access to some exposed properties using the deprecated "_exposedProps_" mechanism on proxy objects. These properties should be explicitly unavailable to proxy objects. This vulnerability affects Firefox < 57.

Read the notes from the security team

Status

Package Ubuntu Release Status
firefox 25.04 plucky
Fixed 57.0.1+build2-0ubuntu1
24.10 oracular
Fixed 57.0.1+build2-0ubuntu1
24.04 LTS noble
Fixed 57.0.1+build2-0ubuntu1
23.10 mantic
Fixed 57.0.1+build2-0ubuntu1
23.04 lunar
Fixed 57.0.1+build2-0ubuntu1
22.10 kinetic
Fixed 57.0.1+build2-0ubuntu1
22.04 LTS jammy
Fixed 57.0.1+build2-0ubuntu1
21.10 impish
Fixed 57.0.1+build2-0ubuntu1
21.04 hirsute
Fixed 57.0.1+build2-0ubuntu1
20.10 groovy
Fixed 57.0.1+build2-0ubuntu1
20.04 LTS focal
Fixed 57.0.1+build2-0ubuntu1
19.10 eoan
Fixed 57.0.1+build2-0ubuntu1
19.04 disco
Fixed 57.0.1+build2-0ubuntu1
18.10 cosmic
Fixed 57.0.1+build2-0ubuntu1
18.04 LTS bionic
Fixed 57.0.1+build2-0ubuntu1
17.10 artful
Fixed 57.0+build4-0ubuntu0.17.10.5
17.04 zesty
Fixed 57.0+build4-0ubuntu0.17.04.5
16.04 LTS xenial
Fixed 57.0+build4-0ubuntu0.16.04.5
14.04 LTS trusty
Fixed 57.0+build4-0ubuntu0.14.04.4
mozjs38 25.04 plucky Not in release
24.10 oracular Not in release
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 25.04 plucky Not in release
24.10 oracular Not in release
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 Ignored end of life
20.04 LTS focal Ignored upstream wontfix
19.10 eoan Ignored end of life
19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Ignored upstream wontfix
17.10 artful Ignored end of life
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

chrisccoulson

This is not fixed in mozjs52, but it's unclear whether it is unaffected or just ignored as https://bugzilla.mozilla.org/show_bug.cgi?id=1392026 is still private and I can't find a changeset referencing it)

john-breton

This has been marked as wontfix by upstream, setting status to ignored for mozjs52.

Severity score breakdown

Parameter Value
Base score 5.3 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-3477-1
    • Firefox vulnerabilities
    • 16 November 2017

Other references