Use After Free Affecting firefox-esr package, versions <45.3.0esr-1


Severity

Recommended
0.0
critical
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
1.82% (88th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Use After Free vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-DEBIAN13-FIREFOXESR-5679599
  • published5 Aug 2016
  • disclosed5 Aug 2016

Introduced: 5 Aug 2016

CVE-2016-5254  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Debian:13 firefox-esr to version 45.3.0esr-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

Use-after-free vulnerability in the nsXULPopupManager::KeyDown function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) by leveraging keyboard access to use the Alt key during selection of top-level menu items.