CVE-2020-14240 Cross-site scripting in HCL Notes

What is CVE-2020-14240?

CVE-2020-14240 is a medium-severity cross-site scripting vulnerability in HCL Notes, published on 5 Nov 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

HCL Notes versions previous to releases 9.0.1 FP10 IF8, 10.0.1 FP6 and 11.0.1 FP1 is susceptible to a Stored Cross-site Scripting (XSS) vulnerability. An attacker could use this vulnerability to execute script in a victim's Web browser within the security context of the hosting Web site and/or steal the victim's cookie-based authentication credentials.

Weakness: CWE-79

Which versions are affected by CVE-2020-14240?

It affects 1 product.

Products include Hcltech Notes.

How do I fix CVE-2020-14240?

No fix has been published for CVE-2020-14240 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2020-14240 being exploited?

There is no known exploitation of CVE-2020-14240 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-jwjh-8w87-hw74.