Integer overflow in libxls - CVE-2017-12109
Published: November 22, 2017
Vulnerability identifier: #VU9400
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2017-12109
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
libxls
libxls
Software vendor:
libxls.sourceforge.net
libxls.sourceforge.net
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists in the xls_preparseWorkSheet function due to integer overflow when handling a MULRK record. A remote attacker can send a specially crafted .xls file, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability may result in system compromise.
The weakness exists in the xls_preparseWorkSheet function due to integer overflow when handling a MULRK record. A remote attacker can send a specially crafted .xls file, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability may result in system compromise.
Remediation
Install update from vendor's website.