Vulnerability-Lookup

GHSA-269W-9HM6-G22Q

Vulnerability from github – Published: 2022-05-24 19:05 – Updated: 2022-05-24 19:05

Details

Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while it is attempting to retrieve an Olm encrypted room key backup from the homeserver) because olm_pk_decrypt has a stack-based buffer overflow. Remote code execution might be possible for some nonstandard build configurations.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-34813"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-06-16T18:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while it is attempting to retrieve an Olm encrypted room key backup from the homeserver) because olm_pk_decrypt has a stack-based buffer overflow. Remote code execution might be possible for some nonstandard build configurations.",
  "id": "GHSA-269w-9hm6-g22q",
  "modified": "2022-05-24T19:05:26Z",
  "published": "2022-05-24T19:05:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34813"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3"
    },
    {
      "type": "WEB",
      "url": "https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2021-34813 (GCVE-0-2021-34813)

Vulnerability from cvelistv5 – Published: 2021-06-16 17:11 – Updated: 2024-08-04 00:26

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 27/100 over 2350 records in the last 180 days details

References

3 references

URL	Tags
https://matrix.org/blog/2021/06/14/adventures-in-…	x_refsource_MISC
https://gitlab.matrix.org/matrix-org/olm/-/releas…	x_refsource_MISC
https://gitlab.matrix.org/matrix-org/olm/-/commit…	x_refsource_MISC

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            "url": "https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm"
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            "url": "https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3"
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            "url": "https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b"
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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.
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GHSA-269W-9HM6-G22Q

CVE-2021-34813 (GCVE-0-2021-34813)

Tags

Sightings

Nomenclature

Related by attack behaviour