This security advisory describes one medium risk vulnerability.
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C] [PCI]
CWE-125 - Out-of-bounds Read
Exploit availability: NoDescription
The vulnerability allows a remote attacker to perform denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when validating the length of authenticated messages during device communication. A remote attacker can send specially crafted data to the system and cause the yubihsm library to fail with a “Not enough space” error.Mitigation
Install updates from vendor's website.Vulnerable software versions
yubihsm-shell: 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2019.03, 2019.12, 2020.10, 2021.03CPE
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.