CVE-2020-4097 Memory corruption in HCL Notes

What is CVE-2020-4097?

CVE-2020-4097 is a medium-severity memory corruption vulnerability in HCL Notes, published on 5 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In HCL Notes version 9 previous to release 9.0.1 FixPack 10 Interim Fix 8, version 10 previous to release 10.0.1 FixPack 6 and version 11 previous to 11.0.1 FixPack 1, a vulnerability in the input parameter handling of the Notes Client could potentially be exploited by an attacker resulting in a buffer overflow. This could enable an attacker to crash HCL Notes or execute attacker-controlled code on the client.

Weakness: CWE-120

Which versions are affected by CVE-2020-4097?

It affects 1 product.

Products include Hcltech Notes.

How do I fix CVE-2020-4097?

No fix has been published for CVE-2020-4097 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-2020-4097 being exploited?

There is no known exploitation of CVE-2020-4097 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 Critical 9.8
• CVE-2022-44753 HCL Notes is susceptible to a stack based buffer overflow vulnerability in wp6sr.dll in Micro Focus KeyView Critical 9.8
• CVE-2022-44755 HCL Notes is susceptible to a stack based buffer overflow vulnerability in lasr.dll in Micro Focus KeyView Critical 9.8
• CVE-2020-14224 Memory corruption in HCL Notes Critical 9.8
• CVE-2020-14268 Memory corruption in HCL Notes Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-f8fj-f7w2-x4xm.