Vulnerability-Lookup

CNVD-2021-103087

Vulnerability from cnvd - Published: 2021-12-29

Title

Armeria路径遍历漏洞

Description

Armeria是一款用于构建使用HTTP/2作为会话层协议的异步微服务器的开源库。 Armeria存在路径遍历漏洞，该漏洞源于软件的路径验证逻辑存在问题。攻击者可以通过发送路径包含\%2F（编码为/）的 HTTP 请求，例如/files/..\%2Fsecrets.txt，访问其受限目录之外的 Armeria 服务器的本地文件系统，绕过 Armeria 的路径验证逻辑。

Severity

中

Patch Name

Armeria路径遍历漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv

Reference

https://github.com/line/armeria/pull/3855

Impacted products

Name
Linecorp Armeria <1.13.4

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-43795",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-43795"
    }
  },
  "description": "Armeria\u662f\u4e00\u6b3e\u7528\u4e8e\u6784\u5efa\u4f7f\u7528HTTP/2\u4f5c\u4e3a\u4f1a\u8bdd\u5c42\u534f\u8bae\u7684\u5f02\u6b65\u5fae\u670d\u52a1\u5668\u7684\u5f00\u6e90\u5e93\u3002\n\nArmeria\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8f6f\u4ef6\u7684\u8def\u5f84\u9a8c\u8bc1\u903b\u8f91\u5b58\u5728\u95ee\u9898\u3002\u653b\u51fb\u8005\u53ef\u4ee5\u901a\u8fc7\u53d1\u9001\u8def\u5f84\u5305\u542b\\%2F\uff08\u7f16\u7801\u4e3a/\uff09\u7684 HTTP \u8bf7\u6c42\uff0c\u4f8b\u5982/files/..\\%2Fsecrets.txt\uff0c\u8bbf\u95ee\u5176\u53d7\u9650\u76ee\u5f55\u4e4b\u5916\u7684 Armeria \u670d\u52a1\u5668\u7684\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\uff0c \u7ed5\u8fc7 Armeria \u7684\u8def\u5f84\u9a8c\u8bc1\u903b\u8f91\u3002",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-103087",
  "openTime": "2021-12-29",
  "patchDescription": "Armeria\u662f\u4e00\u6b3e\u7528\u4e8e\u6784\u5efa\u4f7f\u7528HTTP/2\u4f5c\u4e3a\u4f1a\u8bdd\u5c42\u534f\u8bae\u7684\u5f02\u6b65\u5fae\u670d\u52a1\u5668\u7684\u5f00\u6e90\u5e93\u3002\r\n\r\nArmeria\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8f6f\u4ef6\u7684\u8def\u5f84\u9a8c\u8bc1\u903b\u8f91\u5b58\u5728\u95ee\u9898\u3002\u653b\u51fb\u8005\u53ef\u4ee5\u901a\u8fc7\u53d1\u9001\u8def\u5f84\u5305\u542b\\%2F\uff08\u7f16\u7801\u4e3a/\uff09\u7684 HTTP \u8bf7\u6c42\uff0c\u4f8b\u5982/files/..\\%2Fsecrets.txt\uff0c\u8bbf\u95ee\u5176\u53d7\u9650\u76ee\u5f55\u4e4b\u5916\u7684 Armeria \u670d\u52a1\u5668\u7684\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\uff0c \u7ed5\u8fc7 Armeria \u7684\u8def\u5f84\u9a8c\u8bc1\u903b\u8f91\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Armeria\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Linecorp Armeria \u003c1.13.4"
  },
  "referenceLink": "https://github.com/line/armeria/pull/3855",
  "serverity": "\u4e2d",
  "submitTime": "2021-12-04",
  "title": "Armeria\u8def\u5f84\u904d\u5386\u6f0f\u6d1e"
}

CVE-2021-43795 (GCVE-0-2021-43795)

Vulnerability from cvelistv5 – Published: 2021-12-02 18:00 – Updated: 2024-08-04 04:03

Title

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in com.linecorp.armeria:armeria

Summary

Armeria is an open source microservice framework. In affected versions an attacker can access an Armeria server's local file system beyond its restricted directory by sending an HTTP request whose path contains `%2F` (encoded `/`), such as `/files/..%2Fsecrets.txt`, bypassing Armeria's path validation logic. Armeria 1.13.4 or above contains the hardened path validation logic that handles `%2F` properly. This vulnerability can be worked around by inserting a decorator that performs an additional validation on the request path.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/line/armeria/security/advisori…	x_refsource_CONFIRM
https://github.com/line/armeria/pull/3855	x_refsource_MISC
https://github.com/line/armeria/commit/e2697a575e…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
line	armeria	Affected: < 1.13.4

Show details on NVD website

JSON

To clipboard

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            "url": "https://github.com/line/armeria/pull/3855"
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            "url": "https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284"
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        }
      ],
      "metrics": [
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Sightings

Author	Source	Type	Date	Other

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.