CVE-2022-31142
moderate-risk
Published 2022-07-14
@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.
Do I need to act?
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0.74% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ LOW complexity
Affected Products (2)
Bearer-Auth
Bearer-Auth
Affected Vendors
References (10)
Third Party Advisory
https://github.com/fastify/fastify-bearer-auth/security/advisories/GHSA-376v-xgj...
Permissions Required
https://hackerone.com/reports/1633287
Third Party Advisory
https://github.com/fastify/fastify-bearer-auth/security/advisories/GHSA-376v-xgj...
Permissions Required
https://hackerone.com/reports/1633287
35
/ 100
moderate-risk
Severity
26/34 · High
Exploitability
2/34 · Minimal
Exposure
7/34 · Low