CVE-2021-43615 Memory corruption in n/a
An SMM memory corruption flaw in InsydeH2O firmware allows attackers to write to SMRAM and escalate privileges to System Management Mode.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-43615?
CVE-2021-43615 is a high-severity memory corruption vulnerability in Insyde Insydeh2o, published on 3 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in HddPassword in Insyde InsydeH2O with kernel 5.1 before 05.16.23, 5.2 before 05.26.23, 5.3 before 05.35.23, 5.4 before 05.43.22, and 5.5 before 05.51.22. An SMM memory corruption vulnerability allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
Weakness: CWE-787
Which versions are affected by CVE-2021-43615?
It affects 1 product.
Products include Insyde Insydeh2o.
How do I fix CVE-2021-43615?
No fix has been published for CVE-2021-43615 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-2021-43615 being exploited?
There is no known exploitation of CVE-2021-43615 in the wild and no public exploit code.
Other vulnerabilities in Insyde Insydeh2o
Sources
Also known as GHSA-ghv4-pw8v-9g7q.