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://blog.inhq.net/posts/yubico-libyubihsm-vuln/ https://developers.yubico.com/yubihsm-shell/ https://github.com/Yubico/yubihsm-shell https://www.yubico.com/support/security-advisories/ysa-2020-06/
Created yubihsm-shell tracking bugs for this issue: Affects: fedora-all [bug 1890206]
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.