OpenSSL up to 3.0.7 X.509 Certificate X509_VERIFY_PARAM_add0_policy locking

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenSSL up to 3.0.7. It has been classified as problematic. This affects the function X509_VERIFY_PARAM_add0_policy of the component X.509 Certificate Handler. The manipulation leads to locking. This vulnerability is referenced as CVE-2022-3996. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OpenSSL up to 3.0.7 (Network Encryption Software) and classified as problematic. This issue affects the function X509_VERIFY_PARAM_add0_policy of the component X.509 Certificate Handler. The manipulation with an unknown input leads to a locking vulnerability. Using CWE to declare the problem leads to CWE-667. The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors. Impacted is availability. The summary by CVE is:

If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively. On some operating systems (most widely: Windows) this results in a denial of service when the affected process hangs. Policy processing being enabled on a publicly facing server is not considered to be a common setup. Policy processing is enabled by passing the `-policy' argument to the command line utilities or by calling either `X509_VERIFY_PARAM_add0_policy()' or `X509_VERIFY_PARAM_set1_policies()' functions.

The weakness was published 12/13/2022 as 7725e7bfe6f2ce8146b6552b44e0d226be7638e7. The advisory is shared at github.com. The identification of this vulnerability is CVE-2022-3996 since 11/15/2022. Technical details are known, but no exploit is available.

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 3.0.8 eliminates this vulnerability. Applying the patch 7725e7bfe6f2ce8146b6552b44e0d226be7638e7 is able to eliminate this problem. The bugfix is ready for download at github.com. 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). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Locking
CWE: CWE-667
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211827
Nessus Name: Oracle Linux 9 : edk2 (ELSA-2024-12842)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OpenSSL 3.0.8
Patch: 7725e7bfe6f2ce8146b6552b44e0d226be7638e7

Timelineinfo

11/15/2022 🔍
12/13/2022 +28 days 🔍
12/13/2022 +0 days 🔍
11/26/2024 +714 days 🔍

Sourcesinfo

Product: openssl.org

Advisory: 7725e7bfe6f2ce8146b6552b44e0d226be7638e7
Status: Confirmed

CVE: CVE-2022-3996 (🔍)
GCVE (CVE): GCVE-0-2022-3996
GCVE (VulDB): GCVE-100-215465

Entryinfo

Created: 12/13/2022 18:57
Updated: 11/26/2024 07:20
Changes: 12/13/2022 18:57 (43), 01/07/2023 16:53 (11), 08/02/2024 02:15 (26), 11/26/2024 07:20 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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