Vulnerability-Lookup

osv-2021-700

Vulnerability from osv_ossfuzz

Published

2021-04-29 00:00

Modified

2022-04-13 03:04

Summary

UNKNOWN READ in ReadLEB_u32

Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33749

Crash type: UNKNOWN READ
Crash state:
ReadLEB_u32
InitElements
Compile_ExtendedOpcode

References

URL

Type

https://bugs.chromium.org/p/oss-fuzz/issues/detai…

REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "severity": "MEDIUM"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "wasm3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8cb2fd424309fa6ff70cf00bfcedc4e66d3355c0"
            },
            {
              "fixed": "6bb612ccbfd5f8993a07a99092fab534722df1c3"
            }
          ],
          "repo": "https://github.com/wasm3/wasm3",
          "type": "GIT"
        }
      ],
      "versions": []
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33749\n\n```\nCrash type: UNKNOWN READ\nCrash state:\nReadLEB_u32\nInitElements\nCompile_ExtendedOpcode\n```\n",
  "id": "OSV-2021-700",
  "modified": "2022-04-13T03:04:30.651451Z",
  "published": "2021-04-29T00:00:12.162949Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33749"
    }
  ],
  "summary": "UNKNOWN READ in ReadLEB_u32"
}

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.