NULL Pointer Dereference Affecting openssl package, versions <3.0.2-0ubuntu1.8
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Test your applications- Snyk ID SNYK-UBUNTU2204-OPENSSL-3314816
- published 8 Feb 2023
- disclosed 8 Feb 2023
Introduced: 8 Feb 2023
CVE-2023-0217 Open this link in a new tabHow to fix?
Upgrade Ubuntu:22.04 openssl to version 3.0.2-0ubuntu1.8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Ubuntu.
See How to fix? for Ubuntu:22.04 relevant fixed versions and status.
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.