github - ghsa-9wxc-375c-cvq2

ghsa-9wxc-375c-cvq2

Vulnerability from github

Published

2021-11-23 00:00

Modified

2021-11-27 00:00

Details

The uri-block plugin in Apache APISIX before 2.10.2 uses $request_uri without verification. The $request_uri is the full original request URI without normalization. This makes it possible to construct a URI to bypass the block list on some occasions. For instance, when the block list contains "^/internal/", a URI like //internal/ can be used to bypass it. Some other plugins also have the same issue. And it may affect the developer's custom plugin.

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{
   affected: [],
   aliases: [
      "CVE-2021-43557",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-77",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2021-11-22T09:15:00Z",
      severity: "HIGH",
   },
   details: "The uri-block plugin in Apache APISIX before 2.10.2 uses $request_uri without verification. The $request_uri is the full original request URI without normalization. This makes it possible to construct a URI to bypass the block list on some occasions. For instance, when the block list contains \"^/internal/\", a URI like `//internal/` can be used to bypass it. Some other plugins also have the same issue. And it may affect the developer's custom plugin.",
   id: "GHSA-9wxc-375c-cvq2",
   modified: "2021-11-27T00:00:25Z",
   published: "2021-11-23T00:00:52Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2021-43557",
      },
      {
         type: "WEB",
         url: "https://lists.apache.org/thread/18jyd458ptocr31rnkjs71w4h366mv7h",
      },
      {
         type: "WEB",
         url: "http://www.openwall.com/lists/oss-security/2021/11/22/1",
      },
      {
         type: "WEB",
         url: "http://www.openwall.com/lists/oss-security/2021/11/22/2",
      },
      {
         type: "WEB",
         url: "http://www.openwall.com/lists/oss-security/2021/11/23/1",
      },
   ],
   schema_version: "1.4.0",
   severity: [],
}

CVE-2021-43557 (GCVE-0-2021-43557)

Vulnerability from cvelistv5

Published

2021-11-22 08:25

Modified

2024-08-04 04:03

Severity ?

Summary

The uri-block plugin in Apache APISIX before 2.10.2 uses $request_uri without verification. The $request_uri is the full original request URI without normalization. This makes it possible to construct a URI to bypass the block list on some occasions. For instance, when the block list contains "^/internal/", a URI like `//internal/` can be used to bypass it. Some other plugins also have the same issue. And it may affect the developer's custom plugin.

References

▼	URL	Tags
	https://lists.apache.org/thread/18jyd458ptocr31rnkjs71w4h366mv7h	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2021/11/22/1	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2021/11/22/2	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2021/11/23/1	mailing-list, x_refsource_MLIST

Impacted products

	Vendor	Product	Version
	Apache Software Foundation	Apache APISIX	Version: 1.5 < Apache APISIX 1.5*

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All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

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.

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