NULL Pointer Dereference Affecting openssl-libs package, versions <2:3.0.1-47.0.1.ksplice1.el9_1


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.19% (58th percentile)

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  • Snyk IDSNYK-ORACLE9-OPENSSLLIBS-3335838
  • published1 Mar 2023
  • disclosed8 Feb 2023

Introduced: 8 Feb 2023

CVE-2023-0217  (opens in a new tab)
CWE-476  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Oracle:9 openssl-libs to version 2:3.0.1-47.0.1.ksplice1.el9_1 or higher.
This issue was patched in ELSA-2023-12152.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl-libs package and not the openssl-libs package as distributed by Oracle. See How to fix? for Oracle:9 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.

CVSS Scores

version 3.1