PT-2020-4963 · Mozilla+6 · Firefox+8
Bharadwaj Machiraju
·
Published
2020-11-17
·
Updated
2024-12-12
·
CVE-2020-26959
CVSS v3.1
8.8
High
| Vector | AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 83
Firefox ESR versions prior to 78.5
Thunderbird versions prior to 78.5
Description
The issue is related to a use-after-free error in the WebRequestService component, which can lead to memory corruption and a potentially exploitable crash. This can occur during browser shutdown when reference decrementing happens on a previously freed object.
Recommendations
For Firefox versions prior to 83, update to version 83 or later to resolve the issue.
For Firefox ESR versions prior to 78.5, update to version 78.5 or later to resolve the issue.
For Thunderbird versions prior to 78.5, update to version 78.5 or later to resolve the issue.
Exploit
Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Firefox
Firefox Esr
Linuxmint
Red Hat
Suse
Thunderbird
Ubuntu