CVE-2020-24388
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
Se detectó un problema en la función _send_secure_msg() de yubihsm-shell versiones hasta 2.0.2. La función no comprueba el campo de longitud insertado en un mensaje recibido del dispositivo. Esto podría conllevar a una llamada a memcpy() de gran tamaño que bloqueará el proceso en ejecución. Esto podría ser usado por un atacante para causar una denegación de servicio
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-08-19 CVE Reserved
- 2020-10-19 CVE Published
- 2024-03-08 EPSS Updated
- 2024-08-04 CVE Updated
- 2024-08-04 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-20: Improper Input Validation
- CWE-787: Out-of-bounds Write
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| https://github.com/Yubico/yubihsm-shell | Third Party Advisory |
| URL | Date | SRC |
|---|---|---|
| https://blog.inhq.net/posts/yubico-libyubihsm-vuln | 2024-08-04 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Yubico Search vendor "Yubico" | Yubihsm-shell Search vendor "Yubico" for product "Yubihsm-shell" | <= 2.0.2 Search vendor "Yubico" for product "Yubihsm-shell" and version " <= 2.0.2" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
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