#VU20000 Buffer overflow in OpenSC - CVE-2018-16421
Published: August 8, 2019
Vulnerability identifier: #VU20000
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-16421
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
OpenSC
OpenSC
Software vendor:
OpenSC
OpenSC
Description
The vulnerability allows a local attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when handling responses from a CAC Card in cac_get_serial_nr_from_CUID in libopensc/card-cac.c. A local attacker can create a specially crafted smartcards, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.