CVE-2020-14258 Denial of service in HCL Notes
Remote attackers can cause a denial of service in HCL Notes clients by sending specially crafted emails that hang the application.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-14258?
CVE-2020-14258 is a high-severity denial of service vulnerability in HCL Notes, published on 21 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
HCL Notes is susceptible to a Denial of Service vulnerability caused by improper validation of user-supplied input. A remote unauthenticated attacker could exploit this vulnerability using a specially-crafted email message to hang the client. Versions 9, 10 and 11 are affected.
Weakness: CWE-20
Which versions are affected by CVE-2020-14258?
It affects 1 product.
Products include Hcltech Notes.
How do I fix CVE-2020-14258?
No fix has been published for CVE-2020-14258 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-14258 being exploited?
There is no known exploitation of CVE-2020-14258 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-xjww-8m9x-vvj8.