CVE-2022-25757 (GCVE-0-2022-25757)

Vulnerability from cvelistv5 – Published: 2022-03-28 07:00 – Updated: 2024-08-03 04:49
VLAI?
Title
Apache APISIX: the body_schema check in request-validation plugin can be bypassed
Summary
In Apache APISIX before 2.13.0, when decoding JSON with duplicate keys, lua-cjson will choose the last occurred value as the result. By passing a JSON with a duplicate key, the attacker can bypass the body_schema validation in the request-validation plugin. For example, `{"string_payload":"bad","string_payload":"good"}` can be used to hide the "bad" input. Systems satisfy three conditions below are affected by this attack: 1. use body_schema validation in the request-validation plugin 2. upstream application uses a special JSON library that chooses the first occurred value, like jsoniter or gojay 3. upstream application does not validate the input anymore. The fix in APISIX is to re-encode the validated JSON input back into the request body at the side of APISIX. Improper Input Validation vulnerability in __COMPONENT__ of Apache APISIX allows an attacker to __IMPACT__. This issue affects Apache APISIX Apache APISIX version 2.12.1 and prior versions.
Severity ?
No CVSS data available.
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache APISIX Affected: Apache APISIX , ≤ 2.12.1 (custom)
Create a notification for this product.
Credits
Thanks for Guangli Dong from www.huoxian.cn
Show details on NVD website
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