What is the CVSS score of CVE-2020-13132?

CVE-2020-13132 has a CVSS 3.1 base score of 4.6 (Medium). CVSS vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.6%.

Is there a public PoC exploit available for CVE-2020-13132?

Yes, a public proof-of-concept exploit is available for CVE-2020-13132. Prioritise patching immediately. EPSS: 0.6%.

Libykpiv CVE-2020-13132

MEDIUM

Release of Invalid Pointer or Reference (CWE-763)

2020-07-09 cve@mitre.org

Denial Of Service Libykpiv Piv Tool Manager Yubikey Smart Card Minidriver

4.6

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.6 MEDIUM

AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Jul 09, 2020 - 18:15 nvd

MEDIUM 4.6

DescriptionNVD

An issue was discovered in Yubico libykpiv before 2.1.0. An attacker can trigger an incorrect free() in the ykpiv_util_generate_key() function in lib/util.c through incorrect error handling code. This could be used to cause a denial of service attack.

AnalysisAI

An issue was discovered in Yubico libykpiv before 2.1.0. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-763. An issue was discovered in Yubico libykpiv before 2.1.0. An attacker can trigger an incorrect free() in the ykpiv_util_generate_key() function in lib/util.c through incorrect error handling code. This could be used to cause a denial of service attack. Affected products include: Yubico Libykpiv, Yubico Piv Tool Manager, Yubico Yubikey Smart Card Minidriver. Version information: before 2.1.0..

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.