Buffer overflow in Hancom Office
CVE-2016-4292
When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will use a static size to allocate a heap buffer yet explicitly trust a size from the file when modifying data inside of it. Due to this, an aggressor can corrupt memory outside the bounds of this buffer which can lead to code execution under the context of the application.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (80.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Hancom Office — versions 2014 VP Trial HShow.exe Product version: 9.1.0.2176 HncBM90.dll Product version: 9.1.0.2291
- Hancom Office 2014
Weakness classification (CWE)
References
- www.talosintelligence.com/reports/TALOS-2016-0147/ (Technical Description, Exploit, VDB Entry, Third Party Advisory)
- www.securityfocus.com/bid/92325 (vdb-entry)
Frequently asked questions
- What is CVE-2016-4292?
- CVE-2016-4292 is a high-severity vulnerability in Hancom Office, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-01-06.
- How severe is CVE-2016-4292?
- High severity. CVSS v3 base score is 7.8 out of 10.