Stack Buffer Overflow in Realtek RTL8195A Wi-Fi Module
CVE-2020-25855

8.1HIGH

Key Information:

Vendor

Realtek

Status
Realtek Rtl8195a Wi-fi Module
Vendor
CVE Published:
3 February 2021

What is CVE-2020-25855?

The Realtek RTL8195A Wi-Fi Module prior to the April 2020 releases is vulnerable to a stack buffer overflow due to a lack of validation in the AES_UnWRAP() function's size parameter during a memcpy() operation. This vulnerability can lead to remote code execution or denial of service. Attackers can exploit this flaw by impersonating a legitimate Access Point and injecting malicious packets during the WPA2 handshake, requiring knowledge of the network's PSK to successfully exploit the vulnerability.

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Affected Version(s)

Realtek RTL8195A Wi-Fi Module Versions before 2020-04-21 (up to and excluding 2.08)

References

https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilitie...
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CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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