Vulnerability CVE-2021-21958


Published: 2022-02-16

Description:
A heap-based buffer overflow vulnerability exists in the Hword HwordApp.dll functionality of Hancom Office 2020 11.0.0.2353. A specially-crafted malformed file can lead to memory corruption and potential arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

Type:

CWE-787

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Hancom -> Hancom office 2020 

 References:
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1386
https://blog.talosintelligence.com/2022/02/vuln-spotlight-.html

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