Vulnerability-Lookup

CNVD-2018-24156

Vulnerability from cnvd - Published: 2018-11-22

Title

Py-EVM拒绝服务漏洞

Description

Py-EVM是一款基于Python实现的以太坊虚拟机。 Py-EVM 0.2.0-alpha.33版本中存在拒绝服务漏洞，攻击者可利用该漏洞造成拒绝服务。

Severity

中

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://github.com/ethereum/py-evm

Reference

https://github.com/ethereum/py-evm/issues/1448 https://twitter.com/AlexanderFisher/status/1060923428641878019 https://twitter.com/NettaLab/status/1060889400102383617 https://www.reddit.com/r/ethereum/comments/9vkk2g/netta_labs_claim_to_have_found_a_vulnerability_in/e9d3wyx/

Impacted products

Name
Py-EVM Py-EVM 0.2.0-alpha.33

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2018-18920"
    }
  },
  "description": "Py-EVM\u662f\u4e00\u6b3e\u57fa\u4e8ePython\u5b9e\u73b0\u7684\u4ee5\u592a\u574a\u865a\u62df\u673a\u3002\n\nPy-EVM 0.2.0-alpha.33\u7248\u672c\u4e2d\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "renardbebe",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://github.com/ethereum/py-evm",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-24156",
  "openTime": "2018-11-22",
  "products": {
    "product": "Py-EVM Py-EVM 0.2.0-alpha.33"
  },
  "referenceLink": "https://github.com/ethereum/py-evm/issues/1448\r\nhttps://twitter.com/AlexanderFisher/status/1060923428641878019\r\nhttps://twitter.com/NettaLab/status/1060889400102383617\r\nhttps://www.reddit.com/r/ethereum/comments/9vkk2g/netta_labs_claim_to_have_found_a_vulnerability_in/e9d3wyx/",
  "serverity": "\u4e2d",
  "submitTime": "2018-11-13",
  "title": "Py-EVM\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2018-18920 (GCVE-0-2018-18920)

Vulnerability from cvelistv5 – Published: 2018-11-12 02:00 – Updated: 2024-08-05 11:23

Summary

Py-EVM v0.2.0-alpha.33 allows attackers to make a vm.execute_bytecode call that triggers computation._stack.values with '"stack": [100, 100, 0]' where b'\x' was expected, resulting in an execution failure because of an invalid opcode. This is reportedly related to "smart contracts can be executed indefinitely without gas being paid."

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

4 references

URL	Tags
https://twitter.com/AlexanderFisher/status/106092…	x_refsource_MISC
https://github.com/ethereum/py-evm/issues/1448	x_refsource_MISC
https://twitter.com/NettaLab/status/1060889400102383617	x_refsource_MISC
https://www.reddit.com/r/ethereum/comments/9vkk2g…	x_refsource_MISC

Date Public

2018-11-11 00:00

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.

Action not permitted

CNVD-2018-24156

CVE-2018-18920 (GCVE-0-2018-18920)

Tags

Sightings

Nomenclature

Related by attack behaviour