CVE-2021-35393 Memory corruption in n/a
Remote unauthenticated attackers can achieve arbitrary code execution on devices using Realtek Jungle SDK via a stack buffer overflow in the WiFi Simple Config server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-35393?
CVE-2021-35393 is a critical memory corruption vulnerability in n/a, published on 16 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-787
Which versions are affected by CVE-2021-35393?
It affects 1 product.
Products include Realtek Rtl819x Jungle Software Development Kit.
How do I fix CVE-2021-35393?
No fix has been published for CVE-2021-35393 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-35393 being exploited?
There is no known exploitation of CVE-2021-35393 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-m5f8-mpp8-9vp4.