7.5
CWE
476
Advisory Published
CVE Published
CVE Published
Advisory Published
Updated

CVE-2023-0217: NULL dereference validating DSA public key

First published: Wed Jan 25 2023(Updated: )

A flaw was found in OpenSSL. 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, most likely leading 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.

Credit: openssl-security@openssl.org openssl-security@openssl.org openssl-security@openssl.org

Affected SoftwareAffected VersionHow to fix
redhat/openssl<1:3.0.1-47.el9_1
1:3.0.1-47.el9_1
redhat/openssl<1:3.0.1-46.el9_0
1:3.0.1-46.el9_0
OpenSSL OpenSSL>=3.0.0<=3.0.7
rust/openssl-src>=300.0.0<300.0.12
300.0.12
debian/openssl
1.1.1w-0+deb11u1
1.1.1n-0+deb11u5
3.0.14-1~deb12u1
3.0.14-1~deb12u2
3.3.2-1

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2023-0217.

  • What is the severity of CVE-2023-0217?

    The severity of CVE-2023-0217 is high with a severity value of 7.5.

  • What is the affected software for CVE-2023-0217?

    The affected software for CVE-2023-0217 is OpenSSL version 1:3.0.1-47.el9_1 and OpenSSL version 1:3.0.1-46.el9_0.

  • How can CVE-2023-0217 be exploited?

    CVE-2023-0217 can be exploited by an application trying to check a malformed DSA public key by the EVP_PKEY_public_check() function, which may lead to an application crash.

  • Is there a fix available for CVE-2023-0217?

    Yes, the fix for CVE-2023-0217 is available in OpenSSL version 1:3.0.1-47.el9_1 and OpenSSL version 1:3.0.1-46.el9_0.

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