Denial of service in HCL Notes



Published: 2020-11-24
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-14258
CWE ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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HCL Notes
Client/Desktop applications / Office applications

Vendor HCL Technologies

Security Advisory

This security advisory describes one medium risk vulnerability.

1) Input validation error

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-14258

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted email message to hang the client and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HCL Notes: 9.0.0, 10.0.0, 11.0.0

CPE External links

https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0085304

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open an attachment in an e-mail message.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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