CVE-2023-50234 Hancom Office Cell XLS File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability
Remote attackers can execute arbitrary code by tricking users into opening malicious XLS files in Hancom Office Cell due to a stack-based buffer overflow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-50234?
CVE-2023-50234 is a high-severity memory corruption vulnerability in Hancom Office, published on 3 May 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Hancom Office Cell XLS File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hancom Office Cell. 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 XLS files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20386.
Which versions are affected by CVE-2023-50234?
It affects 1 product.
Products include Hancom Office Cell.
How do I fix CVE-2023-50234?
No fix has been published for CVE-2023-50234 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-50234 being exploited?
There is no known exploitation of CVE-2023-50234 in the wild and no public exploit code.
Sources
Also known as GHSA-6f5p-4w3q-jr7c.