Buffer overflow in Yubico products - CVE-2020-13132
Published: July 9, 2020 / Updated: July 15, 2020
Vulnerability identifier: #VU29616
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-13132
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the passed in pointer is deallocated instead of the dynamically allocated one inside the "ykpiv_util_generate_key()" function. A local attacker can use a specially crafted token, trigger memory corruption and cause a denial of service condition on the target system.
Affected software
libykpiv
YubiKey Smart Card Minidriver
Yubico PIV Tool
YubiKey Smart Card Minidriver
Yubico PIV Tool
How to mitigate CVE-2020-13132
Install updates from vendor's website.
Yubico PIV Tool - update to 2.1.0