Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWM0cXItZ21yOS12MjN3

Prefix escape

Impact

By crafting a specific URL, it is possible to escape the prefix of the proxied backend service.
If the base url of the proxied server is /pub/, a user expect that accessing /priv on the target service would not be possible. Unfortunately, it is.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Patches

All releases after v4.3.1 include the fix.

Workarounds

There are no workaround available.

For more information

If you have any questions or comments about this advisory:

• Open an issue in fastify-reply-from
• Email us at [email protected]

Permalink: https://github.com/advisories/GHSA-c4qr-gmr9-v23w
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWM0cXItZ21yOS12MjN3
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Low
Classification: General
Published: almost 4 years ago
Updated: almost 2 years ago

CVSS Score: 10.0
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

EPSS Percentage: 0.00318
EPSS Percentile: 0.70759

Identifiers: GHSA-c4qr-gmr9-v23w, CVE-2021-21322
References:

• https://github.com/fastify/fastify-http-proxy/security/advisories/GHSA-c4qr-gmr9-v23w
• https://github.com/fastify/fastify-http-proxy/commit/02d9b43c770aa16bc44470edecfaeb7c17985016
• https://www.npmjs.com/package/fastify-http-proxy
• https://nvd.nist.gov/vuln/detail/CVE-2021-21322
• https://github.com/advisories/GHSA-c4qr-gmr9-v23w

Repository: https://github.com/fastify/fastify-http-proxy
Blast Radius: 22.9

Affected Packages