high7.5
CVE-2020-24388
An issue was discovered in the _send_secure_msg() function of yubihsm-shell through 2.0.2.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Yubico | Yubihsm-Shell | through 2.0.2 |
| Fedoraproject | Fedora | Version 33 |
Weakness classification
References
- NVD record
- CVE.org record
- https://blog.inhq.net/posts/yubico-libyubihsm-vuln/
- https://developers.yubico.com/yubihsm-shell/
- https://github.com/Yubico/yubihsm-shell
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y77KQJW76M3PFOBFLBT6DLH2NWHYRNZO/
- https://www.yubico.com/support/security-advisories/ysa-2020-06/
- https://blog.inhq.net/posts/yubico-libyubihsm-vuln/
- https://developers.yubico.com/yubihsm-shell/
- https://github.com/Yubico/yubihsm-shell
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y77KQJW76M3PFOBFLBT6DLH2NWHYRNZO/
- https://www.yubico.com/support/security-advisories/ysa-2020-06/