Bug 2015156 (CVE-2021-22964)

Summary: CVE-2021-22964 fastify-static: open redirect and DoS via an URL with double slash followed by a domain and with invalid characters
Product: [Other] Security Response Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: gghezzo, gparvin, jramanat, pahickey, stcannon
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2021-10-27 14:08:04 UTC Type: ---
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Bug Blocks: 2015158    

Description Guilherme de Almeida Suckevicz 2021-10-18 14:16:16 UTC 
A redirect vulnerability in the `fastify-static` module version >= 4.2.4 and < 4.4.1 allows remote attackers to redirect Mozilla Firefox users to arbitrary websites via a double slash `//` followed by a domain: `http://localhost:3000//a//youtube.com/%2e%2e%2f%2e%2e`.A DOS vulnerability is possible if the URL contains invalid characters `curl --path-as-is "http://localhost:3000//^/.."`The issue shows up on all the `fastify-static` applications that set `redirect: true` option. By default, it is `false`.

Reference:
https://hackerone.com/reports/1361804
Comment 1 Product Security DevOps Team 2021-10-27 14:08:04 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-22964