CVE-2023-39908
CVE-2023-39908 is a high-severity vulnerability in Yubico Yubihsm 2 Sdk with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 0% (38th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Yubico Yubihsm 2 Sdk
- Published:
- Last modified:
Description
The PKCS11 module of the YubiHSM 2 SDK through 2023.01 does not properly validate the length of specific read operations on object metadata. This may lead to disclosure of uninitialized and previously used memory.
Frequently asked questions
- What is CVE-2023-39908?
- The PKCS11 module of the YubiHSM 2 SDK through 2023.01 does not properly validate the length of specific read operations on object metadata. This may lead to disclosure of uninitialized and previously used memory.
- How severe is CVE-2023-39908?
- CVE-2023-39908 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2023-39908 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-39908?
- CVE-2023-39908 affects Yubico Yubihsm 2 Sdk. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-39908?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2023-39908 published?
- CVE-2023-39908 was published on 2023-08-14 and last updated on 2026-06-17.
References
- https://blog.inhq.net/posts/yubico-yubihsm-pkcs-vuln/
- https://www.yubico.com/support/security-advisories/ysa-2023-01/
Affected products (1)
- cpe:2.3:a:yubico:yubihsm_2_sdk:*:*:*:*:*:*:*:*
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