ghsa-qmw8-3v4g-gwj4
Vulnerability from github
Published
2021-03-03 01:52
Modified
2021-03-02 03:32
Severity ?
Summary
Prefix escape
Details
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
A patch have been submitted by Corey Farrell git@cfware.com, the reporter. All releases after v4.0.2 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 hello@matteocollina.com
{ "affected": [ { "package": { "ecosystem": "npm", "name": "fastify-reply-from" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "4.0.2" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2021-21321" ], "database_specific": { "cwe_ids": [ "CWE-20" ], "github_reviewed": true, "github_reviewed_at": "2021-03-02T03:32:13Z", "nvd_published_at": "2021-03-02T04:15:00Z", "severity": "CRITICAL" }, "details": "### Impact\n\nBy crafting a specific URL, it is possible to escape the prefix of the proxied backend service.\nIf 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.\n\n[CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N)\n\n### Patches\n\nA patch have been submitted by Corey Farrell git@cfware.com, the reporter.\nAll releases after v4.0.2 include the fix.\n\n### Workarounds\n\nThere are no workaround available.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [fastify-reply-from](https://github.com/fastify/fastify-reply-from)\n* Email us at [hello@matteocollina.com](mailto:hello@matteocollina.com)", "id": "GHSA-qmw8-3v4g-gwj4", "modified": "2021-03-02T03:32:13Z", "published": "2021-03-03T01:52:05Z", "references": [ { "type": "WEB", "url": "https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-qmw8-3v4g-gwj4" }, { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21321" }, { "type": "WEB", "url": "https://github.com/fastify/fastify-reply-from/commit/dea227dda606900cc01870d08541b4dcc69d3889" }, { "type": "WEB", "url": "https://www.npmjs.com/package/fastify-reply-from" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N", "type": "CVSS_V3" } ], "summary": "Prefix escape" }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.