CVE-2017-12109 Integer overflow in libxls
An integer overflow in libxls allows remote code execution via a specially crafted XLS 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
- Available
What is CVE-2017-12109?
CVE-2017-12109 is a high-severity vulnerability in libxls, published on 24 Apr 2018. 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
An exploitable integer overflow vulnerability exists in the xls_preparseWorkSheet function of libxls 1.4 when handling a MULRK record. A specially crafted XLS file can cause a memory corruption resulting in remote code execution. An attacker can send malicious XLS file to trigger this vulnerability.
Weakness: CWE-190
Which versions are affected by CVE-2017-12109?
It affects 1 product.
Products include Libxls Project Libxls.
How do I fix CVE-2017-12109?
Upgrade to a fixed version.
Is CVE-2017-12109 being exploited?
There is no known exploitation of CVE-2017-12109 in the wild and no public exploit code.
Other vulnerabilities in libxls
Sources
Also known as DEBIAN-CVE-2017-12109, GHSA-9qvr-p35q-rv6h, UBUNTU-CVE-2017-12109.