Vulnerabilities > CVE-2020-24388 - Out-of-bounds Write vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 3 | |
| OS | 1 |
Common Weakness Enumeration (CWE)
References
- https://www.yubico.com/support/security-advisories/ysa-2020-06/
- https://developers.yubico.com/yubihsm-shell/
- https://github.com/Yubico/yubihsm-shell
- https://blog.inhq.net/posts/yubico-libyubihsm-vuln/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y77KQJW76M3PFOBFLBT6DLH2NWHYRNZO/