CVE-2016-5271: Medium severity firefox vulnerability

Published Sep 20, 2016
·
Updated

An out-of-bounds read during the processing of text runs in some pages using display:contents.

Other sources

The PropertyProvider::GetSpacingInternal function in Mozilla Firefox before 49.0 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via text runs in conjunction with a "display: contents" Cascading Style Sheets (CSS) property.

Launchpad

Affected Software

4 affected componentsFixes available
Mozilla Firefox<49
49
Mozilla Firefox<=48.0.2
debian/firefox
137.0-1
debian/firefox-esr
115.14.0esr-1~deb11u1128.9.0esr-1~deb11u1128.8.0esr-1~deb12u1128.9.0esr-1~deb12u1128.8.0esr-1128.9.0esr-2

Event History

Sep 20, 2016
CVE Published
12:00 AM
Sep 22, 2016
CVE Published
via MITRE·10:00 PM
Data Sourced
via MITRE·10:00 PM
Description
Jan 11, 2024
Data Sourced
via Launchpad·10:20 PM
Description
Sep 24, 2024
Data Sourced
via Ubuntu·01:12 AM
RemedyDescriptionSeverityAffected Software
Mar 31, 2025
Data Sourced
via Debian·03:26 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is CVE-2016-5271?

CVE-2016-5271 is a vulnerability that allows remote attackers to cause a denial of service (application crash) via text runs in conjunction with the "display: contents" CSS property in Mozilla Firefox before version 49.0.

2

What is the severity of CVE-2016-5271?

The severity of CVE-2016-5271 is rated as medium with a score of 6.5.

3

How does CVE-2016-5271 affect Mozilla Firefox?

CVE-2016-5271 affects Mozilla Firefox versions before 49.0.

4

How can I fix CVE-2016-5271?

To fix CVE-2016-5271, users should update to Mozilla Firefox version 49.0 or higher.

5

Where can I find more information about CVE-2016-5271?

You can find more information about CVE-2016-5271 at the following references: [Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1288946), [Mozilla Security Advisory](https://www.mozilla.org/en-US/security/advisories/mfsa2016-85/), and [Mozilla Security Announce](http://www.mozilla.org/security/announce/2016/mfsa2016-85.html).

Contact

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