CVE-2021-21321: Prefix escape
First published: Tue Feb 23 2021(Updated: )
A flaw was found in fastify-reply-from. Escaping of the prefix of the proxied backend service is possible allowing an attacker, using a specially crafted URL, to gain access to directories that would otherwise be out of bounds. The highest threat from this vulnerability is to data confidentiality and integrity.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/fastify-reply-from | <4.0.2 | 4.0.2 |
| Fastify Reply-from | <4.0.2 |
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Reference Links
- https://github.com/fastify/fastify-reply-from/commit/dea227dda606900cc01870d08541b4dcc69d3889
- https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-qmw8-3v4g-gwj4
- https://www.npmjs.com/package/fastify-reply-from
- https://access.redhat.com/errata/RHSA-2021:1168
- https://access.redhat.com/security/cve/cve-2021-21321
- https://access.redhat.com/errata/RHSA-2021:3016
- https://bugzilla.redhat.com/show_bug.cgi?id=1942178
- https://www.cve.org/CVERecord?id=CVE-2021-21321 https://nvd.nist.gov/vuln/detail/CVE-2021-21321 https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-qmw8-3v4g-gwj4
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