Vulnerability Monitor

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CVE-2021-35393

Realtek Jungle SDK version v2.x up to v3.4.14B provides a 'WiFi Simple Config' server that implements both UPnP and SSDP protocols. The binary is usually named wscd or mini_upnpd and is the successor to miniigd. The server is vulnerable to a stack buffer overflow vulnerability that is present due to unsafe parsing of the UPnP SUBSCRIBE/UNSUBSCRIBE Callback header. Successful exploitation of this vulnerability allows remote unauthenticated attackers to gain arbitrary code execution on the affected device.

Published

2021-08-16T12:15:07.230

Last Modified

2024-11-21T06:12:17.060

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

10.0

Weaknesses

Type: Primary
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	realtek	realtek_jungle_sdk	≤ 3.4.14b	Yes

References

https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain Exploit, Third Party Advisory ([email protected])
https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en Patch, Vendor Advisory ([email protected])
https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf Patch, Vendor Advisory ([email protected])
https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.realtek.com/en/cu-1-en/cu-1-taiwan-en Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)