Vulnerability-Lookup

VAR-202102-0234

Vulnerability from variot - Updated: 2023-12-18 14:00

The function ClientEAPOLKeyRecvd() in the Realtek RTL8195A Wi-Fi Module prior to versions released in April 2020 (up to and excluding 2.08) does not validate the size parameter for an rtl_memcpy() operation, resulting in a stack buffer overflow which can be exploited for denial of service. An attacker can impersonate an Access Point and attack a vulnerable Wi-Fi client, by injecting a crafted packet into the WPA2 handshake. The attacker does not need to know the network's PSK. Realtek RTL8195A Wi-Fi The module contains a vulnerability related to out-of-bounds writing.Denial of service (DoS) It may be put into a state. Realtek RTL8195A is an IoT microcontroller from Taiwan Realtek Semiconductor (Realtek).

Realtek RTL8195A versions prior to 2.08 have a buffer overflow vulnerability

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CVE-2020-25857 (GCVE-0-2020-25857)

Vulnerability from cvelistv5 – Published: 2021-02-03 16:48 – Updated: 2024-08-04 15:49

Summary

Severity

No CVSS data available.

CWE

CWE-121 - Stack buffer overflow (CWE-121)

Assigner

VDOO

References

1 reference

URL	Tags
https://www.vdoo.com/blog/realtek-rtl8195a-vulner…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
n/a	Realtek RTL8195A Wi-Fi Module	Affected: Versions before 2020-04-21 (up to and excluding 2.08)

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.

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-202102-0234

CVE-2020-25857 (GCVE-0-2020-25857)

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Sightings

Nomenclature

Related by attack behaviour