Static Nonce Identified in Content Security Policy (CSP)
Summary#
Invicti identified that the nonce used remained same for subsequent responses.
Impact#
An attacker can carry out a successful Cross-site Scripting attack by using this nonce.
Remediation#
The application must generate a fresh value for the nonce-value directive at random and independently each time it transmits a policy. The value should be at least 128 bits long and should be generated using a cryptographically secure random number generator.
Classifications#
Further Reading#
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