Buffer overflow in Justsystems Ichitaro
CVE-2017-2790
When processing a record type of 0x3c from a Workbook stream from an Excel file (.xls), JustSystems Ichitaro Office trusts that the size is greater than zero, subtracts one from the length, and uses this result as the size for a memcpy. This results in a heap-based buffer overflow and can lead to code execution under the context of the application.
Vulnerability class: Buffer Overflow
EPSS: 0.019 (77.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Justsystems Ichitaro — versions n/a
Weakness classification (CWE)
References
- talos-cna@cisco.com (vdb-entry, x_refsource_BID)
- talos-cna@cisco.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2017-2790?
- CVE-2017-2790 is a high-severity vulnerability in Justsystems Ichitaro, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2017-02-24.
- How severe is CVE-2017-2790?
- High severity. CVSS v3 base score is 8.8 out of 10.