Use After Free Affecting firefox-esr package, versions <68.12.0esr-1~deb10u1


0.0
high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.26% (65th percentile)
Expand this section
NVD
8.8 high
Expand this section
Red Hat
8.8 high
Expand this section
SUSE
8.8 high

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 ID SNYK-DEBIAN10-FIREFOXESR-608764
  • published 26 Aug 2020
  • disclosed 1 Oct 2020

How to fix?

Upgrade Debian:10 firefox-esr to version 68.12.0esr-1~deb10u1 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:10 relevant fixed versions and status.

When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12.

References