High severity · published Jul 14, 2022
CVE-2022-31142
@fastify/bearer-auth is a Fastify plugin to require bearer Authorization headers
7.5
CVSS
1.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BE
Bearer-auth · Fastify
5.0.1 before 7.0.2; 8.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-31142
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-31142
Patch
https://github.com/fastify/fastify-bearer-auth/commit/0c468a616d7e56126dc468150f6a5a92e530b8e4
Patch
https://github.com/fastify/fastify-bearer-auth/commit/39353b15409ee99474545f615ffb16180cf3b716
Patch
https://github.com/fastify/fastify-bearer-auth/commit/f921a0582dc83112039004a9b5041141b50c5b3f
Third Party Advisory
https://github.com/fastify/fastify-bearer-auth/security/advisories/GHSA-376v-xgjx-7mfr
Permissions Required
https://hackerone.com/reports/1633287