Code execution in HCL Notes



Published: 2020-12-03
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-4102
CWE ID CWE-119
Exploitation vector Local
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 low risk vulnerability.

1) Buffer overflow

Risk: Low

CVSSv3.1: 6.3 [CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-4102

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the DXL input parameter. A local administrator can send a specially crafted request, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

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=KB0085499

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

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.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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