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CVE-2023-0217

7.5 · HIGH

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.

Published Feb 8, 2023CWE-476EPSS 1.85%

Overview

CVE-2023-0217 is a high-severity vulnerability. It was published on February 8, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=23985bac83fd50c8e29431009302b5442f985096Refsecurity.gentoo.org/glsa/202402-08Refwww.openssl.org/news/secadv/20230207.txtRefgit.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=23985bac83fd50c8e29431009302b5442f985096Refpsirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003Refsecurity.gentoo.org/glsa/202402-08Refwww.openssl.org/news/secadv/20230207.txt

How CyberStrike helps

Frequently asked questions

What is CVE-2023-0217?

CVE-2023-0217 is a high-severity vulnerability. It was published on February 8, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-0217?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-0217?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-0217?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-0217 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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