CVE-2017-2790 Memory corruption in Ichitaro
A heap-based buffer overflow in JustSystems Ichitaro Office allows remote attackers to execute arbitrary code via a malicious Excel file.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-2790?
CVE-2017-2790 is a high-severity memory corruption vulnerability in JustSystems Ichitaro, published on 24 Feb 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-119
Which versions are affected by CVE-2017-2790?
It affects 1 product.
Products include Justsystems Ichitaro.
How do I fix CVE-2017-2790?
No fix has been published for CVE-2017-2790 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-2017-2790 being exploited?
There is no known exploitation of CVE-2017-2790 in the wild and no public exploit code.
Other vulnerabilities in JustSystems Ichitaro
Sources
Also known as GHSA-8967-365q-pfj7.