cbcvebase.
CVE-2020-6813
published 2020-03-25

CVE-2020-6813: When protecting CSS blocks with the nonce feature of Content Security Policy, the @import statement in the CSS block could allow an attacker to inject…

PriorityP426medium5.3CVSS 3.1
AVNACLPRNUINSUCNILAN
EPSS
1.17%
63.7th percentile
When protecting CSS blocks with the nonce feature of Content Security Policy, the @import statement in the CSS block could allow an attacker to inject arbitrary styles, bypassing the intent of the Content Security Policy. This vulnerability affects Firefox < 74.

Affected

7 ranges
VendorProductVersion rangeFixed in
debianfirefox< firefox 74.0-1 (sid)firefox 74.0-1 (sid)
mozillafirefox< 74.074.0
mozillafirefox
mozillafirefox>= 0 < 74.0+build3-0ubuntu0.16.04.174.0+build3-0ubuntu0.16.04.1
mozillafirefox>= 0 < 74.0+build3-0ubuntu0.18.04.174.0+build3-0ubuntu0.18.04.1
mozillafirefox>= 0 < 74.0+build3-0ubuntu174.0+build3-0ubuntu1
mozillafirefox>= unspecified < 7474

CVSS provenance

nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
osv6.5MEDIUM
vendor_ubuntu6.5MEDIUM
vendor_debian5.3MEDIUM
vendor_redhat5.3MEDIUM
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