Vulnerability in Fastify Bearer-Auth
CVE-2022-31142
@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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.015 (72.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.015 · change: +0.000
Affected products
- Fastify Bearer-Auth — versions 8.0.0
- Fastify Fastify-Bearer-Auth — versions >= 5.0.1, < 7.0.2, = 8.0.0
Weakness classification (CWE)
References
- github.com/fastify/fastify-bearer-auth/security/advisories/GHSA-376v-xgjx-7mfr (Third Party Advisory)
- github.com/fastify/fastify-bearer-auth/commit/0c468a616d7e56126dc468150f6a5a92e… (Patch, Third Party Advisory)
- github.com/fastify/fastify-bearer-auth/commit/39353b15409ee99474545f615ffb16180… (Patch, Third Party Advisory)
- github.com/fastify/fastify-bearer-auth/commit/f921a0582dc83112039004a9b5041141b… (Patch, Third Party Advisory)
- hackerone.com/reports/1633287 (Permissions Required, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-31142?
- CVE-2022-31142 is a high-severity vulnerability in Fastify Bearer-Auth, classified under CWE-208. CVSS score: 7.5/10. Published 2022-07-14.
- How severe is CVE-2022-31142?
- High severity. CVSS v3 base score is 7.5 out of 10.