CVE-2021-29977: Mozilla developers reported memory safety bugs present in Firefox 89. Some of these bugs showed evidence of memory corruption and we presume that with enough…

PriorityP337high8.8CVSS 3.1

AVNACLPRNUIRSUCHIHAH

EPSS

1.01%

58.8th percentile

Mozilla developers reported memory safety bugs present in Firefox 89. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 90.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
debian	firefox	< firefox 90.0-1 (sid)	firefox 90.0-1 (sid)
mozilla	firefox	< 90.0	90.0
mozilla	firefox	—	—
mozilla	firefox	>= 0 < 90.0+build1-0ubuntu0.18.04.1	90.0+build1-0ubuntu0.18.04.1
mozilla	firefox	>= 0 < 90.0+build1-0ubuntu0.20.04.1	90.0+build1-0ubuntu0.20.04.1
mozilla	firefox	>= unspecified < 90	90

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

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