cbcvebase.
CVE-2021-23960
published 2021-02-26

CVE-2021-23960: Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability…

PriorityP342high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
1.21%
64.5th percentile
Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Affected

12 ranges
VendorProductVersion rangeFixed in
debianfirefox< firefox 85.0-1 (sid)firefox 85.0-1 (sid)
debianfirefox-esr< firefox 85.0-1 (sid)firefox 85.0-1 (sid)
debianthunderbird< firefox 85.0-1 (sid)firefox 85.0-1 (sid)
mozillafirefox< 8585
mozillafirefox< 85.085.0
mozillafirefox
mozillafirefox_esr< 78.778.7
mozillathunderbird< 78.778.7
mozillathunderbird>= 0 < 1:78.7.0-11:78.7.0-1
mozillathunderbird>= 0 < 1:78.7.0-11:78.7.0-1
mozillathunderbird>= 0 < 1:78.7.0-11:78.7.0-1
mozillathunderbird>= 0 < 1:78.7.0-11:78.7.0-1

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
vendor_ubuntu8.8HIGH
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