Buffer overflow in Hcltech Notes

CVE-2020-4097

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.

Vulnerability class: Buffer Overflow

EPSS: 0.003 (23.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Hcltech Notes — versions 9.0.1, 10.0.0, 10.0.1
  • N/a Hcl Notes — versions 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

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-4097?
CVE-2020-4097 is a medium-severity vulnerability in Hcltech Notes, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.8/10. Published 2020-11-05.
How severe is CVE-2020-4097?
Medium severity. CVSS v3 base score is 6.8 out of 10.