Buffer overflow in Hancom Office
CVE-2023-50234
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Hancom Office — versions HancomOffice Cell 11.0.0.7123
- Hancom Office Cell — versions 11.0.0.7123
Weakness classification (CWE)
References
- www.zerodayinitiative.com/advisories/ZDI-23-1856/ (x_research-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-50234?
- CVE-2023-50234 is a high-severity vulnerability in Hancom Office, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2024-05-03.
- How severe is CVE-2023-50234?
- High severity. CVSS v3 base score is 7.8 out of 10.