CVE-2020-24387: Vulnerability Analysis & Exploit Details

Status: Modified - Last modified: 07-11-2023 Published: 19-10-2020

CVE-2020-24387
Vulnerability Scoring

7.5
/10

Attack Complexity Details

  • Attack Complexity: Low Impact
  • Attack Vector: NETWORK
  • Privileges Required: None
  • Scope: UNCHANGED
  • User Interaction: NONE

CIA Impact Definition

  • Confidentiality:
  • Integrity:
  • Availability: HIGH IMPACT

CVE-2020-24387 Vulnerability Summary

An issue was discovered in the yh_create_session() function of yubihsm-shell through 2.0.2. The function does not explicitly check the returned session id from the device. An invalid session id would lead to out-of-bounds read and write operations in the session array. This could be used by an attacker to cause a denial of service attack.

Access Complexity Graph for CVE-2020-24387

Impact Analysis for CVE-2020-24387

CVE-2020-24387: Detailed Information and External References

EPSS

0.00389

EPSS %

0.73210

References

0.00389

CWE

CWE-787

Vulnerable Configurations

  • cpe:2.3:a:yubico:yubihsm-shell:2.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:yubico:yubihsm-shell:2.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:yubico:yubihsm-shell:2.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:yubico:yubihsm-shell:2.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:yubico:yubihsm-shell:2.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:yubico:yubihsm-shell:2.0.2:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
    cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

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