Vulnerability · Published May 3, 2024 · Assigned by zdi

CVE-2023-51598Hancom Office Word DOC File Parsing Use-After-Free Remote Code Execution Vulnerability

High 7.0

In plain English

A high-severity use-after-free in Office from Hancom. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 3.0)7.0High

Exploit odds (30 days)0.7%top 45.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Hancom Office Word DOC File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hancom Office Word. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of DOC files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20384.

Affected products (as reported)

Vendor	Product	Versions
Hancom	Office	HancomOffice Word 11.0.0.6914

Weakness: CWE-416 · Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

ZDI-23-1855 x_research-advisory