Vulnerability-Lookup

CNVD-2020-12695

Vulnerability from cnvd - Published: 2020-02-18

Title

Envoy空指针解引用漏洞

Description

Envoy是一款开源、高性能边缘、中间与服务代理。 Envoy 1.12.0存在空指针解引用漏洞，攻击者可通过发送无Host header的畸形HTTP请求利用该漏洞导致Envoy进程异常终止。

Severity

中

Patch Name

Envoy空指针解引用漏洞的补丁

Patch Description

Envoy是一款开源、高性能边缘、中间与服务代理。 Envoy 1.12.0存在空指针解引用漏洞，攻击者可通过发送无Host header的畸形HTTP请求利用该漏洞导致Envoy进程异常终止。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/envoyproxy/envoy/commits/master

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-18838

Impacted products

Name
Envoy Envoy 1.12.0

Show details on source website

JSON

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    "cve": {
      "cveNumber": "CVE-2019-18838",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-18838"
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  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/envoyproxy/envoy/commits/master",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-12695",
  "openTime": "2020-02-18",
  "patchDescription": "Envoy\u662f\u4e00\u6b3e\u5f00\u6e90\u3001\u9ad8\u6027\u80fd\u8fb9\u7f18\u3001\u4e2d\u95f4\u4e0e\u670d\u52a1\u4ee3\u7406\u3002\r\n\r\nEnvoy 1.12.0\u5b58\u5728\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u65e0Host header\u7684\u7578\u5f62HTTP\u8bf7\u6c42\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4Envoy\u8fdb\u7a0b\u5f02\u5e38\u7ec8\u6b62\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": "Envoy\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Envoy Envoy 1.12.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-18838",
  "serverity": "\u4e2d",
  "submitTime": "2019-12-16",
  "title": "Envoy\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e"
}

CVE-2019-18838 (GCVE-0-2019-18838)

Vulnerability from cvelistv5 – Published: 2019-12-13 12:22 – Updated: 2024-08-05 02:02

Summary

An issue was discovered in Envoy 1.12.0. Upon receipt of a malformed HTTP request without a Host header, it sends an internally generated "Invalid request" response. This internally generated response is dispatched through the configured encoder filter chain before being sent to the client. An encoder filter that invokes route manager APIs that access a request's Host header causes a NULL pointer dereference, resulting in abnormal termination of the Envoy process.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

4 references

URL	Tags
https://github.com/envoyproxy/envoy/commits/master	x_refsource_MISC
https://groups.google.com/forum/#%21forum/envoy-users	x_refsource_MISC
https://blog.envoyproxy.io	x_refsource_MISC
https://github.com/envoyproxy/envoy/security/advi…	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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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.

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.

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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.

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CNVD-2020-12695

CVE-2019-18838 (GCVE-0-2019-18838)

Tags

Sightings

Nomenclature

Related by attack behaviour