GHSA-GCJ9-JJ38-HWMC
Vulnerability from github – Published: 2023-06-09 19:31 – Updated: 2023-06-09 19:31
VLAI?
Summary
Vapor's Metrics integration could cause a system drain
Details
Impact
This is a DoS attack against anyone who Bootstraps a metrics backend for their Vapor app with the following attack vector:
- send unlimited requests against a vapor instance with different paths. this will create “unlimited” counters and timers, which will eventually drain the system.
- downstream services might suffer from this attack as well by being spammed with error paths
Patches
This has been patched in 4.40.1. The DefaultResponder will rewrite any undefined route paths for to vapor_route_undefined to avoid unlimited counters.
Workarounds
Don't bootstrap a metrics system or upgrade to 4.40.1
For more information
If you have any questions or comments about this advisory: * Open an issue in Vapor * Ask in Discord
Severity ?
5.3 (Medium)
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.40.0"
},
"package": {
"ecosystem": "SwiftURL",
"name": "github.com/vapor/vapor"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.40.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-21328"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2023-06-09T19:31:47Z",
"nvd_published_at": "2021-02-26T02:15:00Z",
"severity": "MODERATE"
},
"details": "### Impact\nThis is a DoS attack against anyone who Bootstraps a metrics backend for their Vapor app with the following attack vector:\n\n1. send unlimited requests against a vapor instance with different paths. this will create \u201cunlimited\u201d counters and timers, which will eventually drain the system.\n2. downstream services might suffer from this attack as well by being spammed with error paths\n\n### Patches\nThis has been patched in 4.40.1. The `DefaultResponder` will rewrite any undefined route paths for to `vapor_route_undefined` to avoid unlimited counters.\n\n### Workarounds\nDon\u0027t bootstrap a metrics system or upgrade to 4.40.1\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [Vapor](https://github.com/vapor/vapor)\n* Ask in [Discord](http://vapor.team)",
"id": "GHSA-gcj9-jj38-hwmc",
"modified": "2023-06-09T19:31:47Z",
"published": "2023-06-09T19:31:47Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/vapor/vapor/security/advisories/GHSA-gcj9-jj38-hwmc"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21328"
},
{
"type": "WEB",
"url": "https://github.com/vapor/vapor/commit/e3aa712508db2854ac0ab905696c65fd88fa7e23"
},
{
"type": "WEB",
"url": "https://github.com/vapor/vapor"
},
{
"type": "WEB",
"url": "https://github.com/vapor/vapor/releases/tag/4.40.1"
},
{
"type": "WEB",
"url": "https://vapor.codes"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
],
"summary": "Vapor\u0027s Metrics integration could cause a system drain"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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