PT-2020-2004 · Mozilla+5 · Firefox+7
Francisco Alonso
+2
·
Published
2020-04-03
·
Updated
2024-12-12
·
CVE-2020-6819
CVSS v3.1
8.1
High
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 74.0.1
Firefox ESR versions prior to 68.6.1
Thunderbird versions prior to 68.7.0
Description
The issue is related to a use-after-free flaw in the nsDocShell destructor, which can be triggered under certain conditions. This can lead to a race condition, causing the use-after-free. There have been targeted attacks in the wild exploiting this flaw. The exploitation of this issue may allow a remote attacker to access confidential data, compromise data integrity, and cause a denial of service.
Recommendations
For Firefox versions prior to 74.0.1, update to version 74.0.1 or later.
For Firefox ESR versions prior to 68.6.1, update to version 68.6.1 or later.
For Thunderbird versions prior to 68.7.0, update to version 68.7.0 or later.
Exploit
Fix
Race Condition
Use After Free
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Related Identifiers
Affected Products
Alt Linux
Centos
Firefox
Firefox Esr
Red Hat
Suse
Thunderbird
Ubuntu