CVE-2020-6813

Description

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.

Weakness classification

• nvd@nist.gov: NVD-CWE-Other

Primary references

• security@mozilla.org — Permissions Required, Vendor Advisory
• security@mozilla.org — Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Permissions Required, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory