CVE-2020-24388

Description

An issue was discovered in the _send_secure_msg() function of yubihsm-shell through 2.0.2. The function does not validate the embedded length field of a message received from the device. This could lead to an oversized memcpy() call that will crash the running process. This could be used by an attacker to cause a denial of service.

References

https://www.yubico.com/support/security-advisories/ysa-2020-06/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y77KQJW76M3PFOBFLBT6DLH2NWHYRNZO/

https://github.com/Yubico/yubihsm-shell

https://developers.yubico.com/yubihsm-shell/

https://blog.inhq.net/posts/yubico-libyubihsm-vuln/

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3