An invalid pointer dereference on read can be triggered when an application tries to check a malformed DSA public key by the EVP_PKEY_public_check() function. This will most likely lead to an application crash. This function can be called on public keys supplied from untrusted sources which could allow an attacker to cause a denial of service attack. The TLS implementation in OpenSSL does not call this function but applications might call the function if there are additional security requirements imposed by standards such as FIPS 140-3.
Published 2023-02-08 20:15:24
Updated 2024-02-04 09:15:09
View at NVD,   CVE.org
Vulnerability category: Denial of service

Exploit prediction scoring system (EPSS) score for CVE-2023-0217

Probability of exploitation activity in the next 30 days: 0.11%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 43 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2023-0217

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
7.5
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
nvd@nist.gov

CWE ids for CVE-2023-0217

  • A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2023-0217

Products affected by CVE-2023-0217

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