PT-2020-16566 · Mozilla+6 · Firefox+8
Freddy
+2
·
Published
2020-11-09
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Updated
2024-12-12
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CVE-2020-26950
CVSS v2.0
9.3
High
| Vector | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 82.0.3
Firefox ESR versions prior to 78.4.1
Thunderbird versions prior to 78.4.2
Description
The issue is related to the MCallGetProperty opcode being emitted with unmet assumptions, resulting in an exploitable use-after-free condition. This can lead to accessing already freed memory, which is suitable for creating a working exploit. The problem is associated with the incorrect usage of the MCallGetProperty operation code.
Recommendations
For Firefox versions prior to 82.0.3, update to version 82.0.3 or later.
For Firefox ESR versions prior to 78.4.1, update to version 78.4.1 or later.
For Thunderbird versions prior to 78.4.2, update to version 78.4.2 or later.
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