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CVE-2021-43557

UNKNOWN
Published 2021-11-22T08:25:09
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No CVSS data available

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Apache Software Foundation

Apache APISIX

Affected Versions:

1.5

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-9wxc-375c-cvq2

Advisory 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.

CVSS Scoring

CVSS Score

7.5

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-43557
WEB https://lists.apache.org/thread/18jyd458ptocr31rnkjs71w4h366mv7h
WEB http://www.openwall.com/lists/oss-security/2021/11/22/1
WEB http://www.openwall.com/lists/oss-security/2021/11/22/2
WEB http://www.openwall.com/lists/oss-security/2021/11/23/1

Advisory provided by GitHub Security Advisory Database. Published: November 23, 2021, Modified: November 27, 2021

References

https://lists.apache.org/thread/18jyd458ptocr31rnkjs71w4h366mv7h
http://www.openwall.com/lists/oss-security/2021/11/22/1
http://www.openwall.com/lists/oss-security/2021/11/22/2
http://www.openwall.com/lists/oss-security/2021/11/23/1
Published: 2021-11-22T08:25:09
Last Modified: 2024-08-04T04:03:07.927Z
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