CVE-2021-34346 Stack Based Overflow Vulnerability in NVR Storage Expansion
A stack buffer overflow in QNAP NVR Storage Expansion allows attackers to execute arbitrary code on affected devices.
- 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-2021-34346?
CVE-2021-34346 is a critical memory corruption vulnerability in QNAP Systems Inc. NVR Storage Expansion, published on 10 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A stack buffer overflow vulnerability has been reported to affect QNAP device running NVR Storage Expansion. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of NVR Storage Expansion: NVR Storage Expansion 1.0.6 ( 2021/08/03 ) and later
Weakness: CWE-787
Which versions are affected by CVE-2021-34346?
It affects 1 product.
Products include Qnap Nvr Storage Expansion Firmware.
How do I fix CVE-2021-34346?
No fix has been published for CVE-2021-34346 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-2021-34346 being exploited?
There is no known exploitation of CVE-2021-34346 in the wild and no public exploit code.
Sources
Also known as GHSA-w8h2-jg46-g9xc.