OpenSSL up to 1.0.2zg/1.1.1t/3.0.8/3.1.0 X.509 Certificate X509_VERIFY_PARAM_set1_policies resource consumption

Summaryinfo

A vulnerability identified as critical has been detected in OpenSSL up to 1.0.2zg/1.1.1t/3.0.8/3.1.0. This vulnerability affects the function X509_VERIFY_PARAM_set1_policies of the component X.509 Certificate Handler. The manipulation leads to resource consumption. This vulnerability is traded as CVE-2023-0464. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in OpenSSL up to 1.0.2zg/1.1.1t/3.0.8/3.1.0 (Network Encryption Software). This issue affects the function X509_VERIFY_PARAM_set1_policies of the component X.509 Certificate Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function.

The weakness was shared 03/22/2023 as 20230322.txt. The advisory is shared at openssl.org. The identification of this vulnerability is CVE-2023-0464 since 01/24/2023. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 211827 (Oracle Linux 9 : edk2 (ELSA-2024-12842)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.0.2zh, 1.1.1u, 3.0.9 or 3.1.1 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.openssl.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (211827). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Network Encryption Software

Name

• OpenSSL

Version

• 1.0.2za
• 1.0.2zb
• 1.0.2zc
• 1.0.2zd
• 1.0.2ze
• 1.0.2zf
• 1.0.2zg
• 1.1.1
• 1.1.1a
• 1.1.1b
• 1.1.1c
• 1.1.1d
• 1.1.1e
• 1.1.1f
• 1.1.1g
• 1.1.1h
• 1.1.1i
• 1.1.1j
• 1.1.1k
• 1.1.1l
• 1.1.1m
• 1.1.1n
• 1.1.1o
• 1.1.1p
• 1.1.1q
• 1.1.1r
• 1.1.1s
• 1.1.1t
• 3.0
• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.1.0

License

• open-source

Website

• Product: https://www.openssl.org/

CPE 2.3info

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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