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CVE-2021-32701— ORY Oathkeeper 安全漏洞

一分钟漏洞结论

影响对象
ory oathkeeper
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

ORY Oathkeeper是开源的一个身份访问代理(IAP)和访问控制决策API，基于一组访问规则授权HTTP请求。 ORY Oathkeeper存在安全漏洞，该漏洞源于一个身份访问代理(IAP)和访问控制决策API，基于一组访问规则授权HTTP请求。

CVSS 7.5 · High EPSS 1.63% · P75
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一、 漏洞 CVE-2021-32701 基础信息

漏洞信息
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Vulnerability Title
Possible bypass of token claim validation when OAuth2 Introspection caching is enabled
来源: CVE Program / CVE List V5
Vulnerability Description
ORY Oathkeeper is an Identity & Access Proxy (IAP) and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. When you make a request to an endpoint that requires the scope `foo` using an access token granted with that `foo` scope, introspection will be valid and that token will be cached. The problem comes when a second requests to an endpoint that requires the scope `bar` is made before the cache has expired. Whether the token is granted or not to the `bar` scope, introspection will be valid. A patch will be released with `v0.38.12-beta.1`. Per default, caching is disabled for the `oauth2_introspection` authenticator. When caching is disabled, this vulnerability does not exist. The cache is checked in [`func (a *AuthenticatorOAuth2Introspection) Authenticate(...)`](https://github.com/ory/oathkeeper/blob/6a31df1c3779425e05db1c2a381166b087cb29a4/pipeline/authn/authenticator_oauth2_introspection.go#L152). From [`tokenFromCache()`](https://github.com/ory/oathkeeper/blob/6a31df1c3779425e05db1c2a381166b087cb29a4/pipeline/authn/authenticator_oauth2_introspection.go#L97) it seems that it only validates the token expiration date, but ignores whether the token has or not the proper scopes. The vulnerability was introduced in PR #424. During review, we failed to require appropriate test coverage by the submitter which is the primary reason that the vulnerability passed the review process.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
来源: CVE Program / CVE List V5
Vulnerability Title
ORY Oathkeeper 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
ORY Oathkeeper是开源的一个身份访问代理(IAP)和访问控制决策API，基于一组访问规则授权HTTP请求。 ORY Oathkeeper存在安全漏洞，该漏洞源于一个身份访问代理(IAP)和访问控制决策API，基于一组访问规则授权HTTP请求。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
ory oathkeeper >=v0.38.0-beta.2, < v0.38.12-beta.1 -

二、漏洞 CVE-2021-32701 的公开POC

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三、漏洞 CVE-2021-32701 的情报信息

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CVE-2021-32701 补丁与修复 (2)

CVE-2021-32701 厂商安全公告 (1)

IV. Related Vulnerabilities

Same product: oathkeeper
Same vendor: ory
Same weakness: CWE-863

V. Comments for CVE-2021-32701

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