Denial of Service Vulnerability in Yubihsm-shell by Yubico
CVE-2020-24388

7.5HIGH

Key Information:

Vendor

Yubico

Status
Yubihsm-shell
Vendor
CVE Published:
19 October 2020

What is CVE-2020-24388?

A vulnerability in the _send_secure_msg() function of Yubico's yubihsm-shell allows for unmatched length field validation in messages from the device. This oversight can lead to oversized memory copy operations, potentially crashing the process. As a result, attackers could exploit this flaw to induce a denial of service, affecting system availability.

References

https://github.com/Yubico/yubihsm-shell
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https://developers.yubico.com/yubihsm-shell/
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https://www.yubico.com/support/security-advisories/ysa-20...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.