NULL Pointer Dereference Affecting openssl package, versions <1:3.0.1-47.el9_1


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.19% (58th percentile)

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  • Snyk IDSNYK-RHEL9-OPENSSL-3315393
  • published8 Feb 2023
  • disclosed7 Feb 2023

Introduced: 7 Feb 2023

CVE-2023-0217  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:9 openssl to version 1:3.0.1-47.el9_1 or higher.
This issue was patched in RHSA-2023:0946.

NVD Description

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