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VAR-202112-2105

Vulnerability from variot - Updated: 2024-08-14 14:31

A stack buffer overflow was discovered on Realtek RTL8195AM device before 2.0.10, it exists in the client code when an attacker sends a big size Authentication challenge text in WEP security. Realtek RTL8195AM The device contains a vulnerability related to out-of-bounds writes.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. Realtek RTL8195AM is an IoT microcontroller from Taiwan Realtek Semiconductor (Realtek). The Realtek RTL8195AM version before 2.0.10 has a buffer error vulnerability. The vulnerability is caused by the lack of effective processing of large-length text in the software, which leads to a stack buffer overflow. Attackers can send large-size Authentication challenge texts to achieve client-side exploits

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CVE-2021-39306 (GCVE-0-2021-39306)

Vulnerability from cvelistv5 – Published: 2021-12-22 18:08 – Updated: 2024-08-04 02:06

Summary

A stack buffer overflow was discovered on Realtek RTL8195AM device before 2.0.10, it exists in the client code when an attacker sends a big size Authentication challenge text in WEP security.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

2 references

URL	Tags
https://www.realtek.com	x_refsource_MISC
https://www.amebaiot.com/en/security_bulletin/cve…	x_refsource_MISC

Show details on NVD website

JSON

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  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-39306",
    "datePublished": "2021-12-22T18:08:42.000Z",
    "dateReserved": "2021-08-20T00:00:00.000Z",
    "dateUpdated": "2024-08-04T02:06:41.543Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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.

Action not permitted

VAR-202112-2105

CVE-2021-39306 (GCVE-0-2021-39306)

Tags

Sightings

Nomenclature

Related by attack behaviour