CVE-2020-4102 Memory corruption in HCL Notes
A buffer overflow in HCL Notes DXL allows attackers to execute arbitrary code or crash the client application.
- 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-2020-4102?
CVE-2020-4102 is a medium-severity memory corruption vulnerability in HCL Notes, published on 2 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
HCL Notes is susceptible to a Buffer Overflow vulnerability in DXL due to improper validation of user input. A successful exploit could enable an attacker to crash Notes or execute attacker-controlled code on the client system.
Weakness: CWE-120
Which versions are affected by CVE-2020-4102?
It affects 1 product.
Products include Hcltech Notes.
How do I fix CVE-2020-4102?
No fix has been published for CVE-2020-4102 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-2020-4102 being exploited?
There is no known exploitation of CVE-2020-4102 in the wild and no public exploit code.
Other vulnerabilities in HCL Notes
- CVE-2022-44751 HCL Notes is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView
- CVE-2022-44753 HCL Notes is susceptible to a stack based buffer overflow vulnerability in wp6sr.dll in Micro Focus KeyView
- CVE-2022-44755 HCL Notes is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView
- CVE-2020-14224 Memory corruption in HCL Notes
- CVE-2020-14268 Memory corruption in HCL Notes
Sources
Also known as GHSA-qrxp-3jr9-xcc9.