CVE-2022-31142

Potential Timing Attack Vector in @fastify/bearer-auth

Description

@fastify/bearer-auth is a Fastify plugin to require bearer Authorization headers. @fastify/bearer-auth prior to versions 7.0.2 and 8.0.1 does not securely use crypto.timingSafeEqual. A malicious attacker could estimate the length of one valid bearer token. According to the corresponding RFC 6750, the bearer token has only base64 valid characters, reducing the range of characters for a brute force attack. Version 7.0.2 and 8.0.1 of @fastify/bearer-auth contain a patch. There are currently no known workarounds. The package fastify-bearer-auth, which covers versions 6.0.3 and prior, is also vulnerable starting at version 5.0.1. Users of fastify-bearer-auth should upgrade to a patched version of @fastify/bearer-auth.

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.25%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory hackerone.com
Affected: fastify fastify-bearer-auth
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2022-31142?
CVE-2022-31142 has been scored as a high severity vulnerability.
How to fix CVE-2022-31142?
To fix CVE-2022-31142, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-31142 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-31142 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-31142?
CVE-2022-31142 affects fastify fastify-bearer-auth.
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