Apple macOS up to 12.3 Apache null pointer dereference

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

Summaryinfo

A vulnerability, which was classified as problematic, was found in Apple macOS up to 12.3. This impacts an unknown function of the component Apache. Such manipulation leads to an unknown weakness. This vulnerability is uniquely identified as CVE-2021-44224. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple macOS up to 12.3 (Operating System). It has been rated as problematic. Affected by this issue is some unknown functionality of the component Apache. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. The impact remains unknown.

The weakness was disclosed 05/16/2022 as HT213257 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2021-44224. A simple authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The advisory points out:

Multiple issues in apache

The vulnerability scanner Nessus provides a plugin with the ID 276163 (TencentOS Server 3: mod_http2 (TSSA-2022:0259)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 12.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

Multiple issues were addressed by updating apache to version 2.4.53.

The vulnerability is also documented in the databases at Tenable (276163) and CERT Bund (WID-SEC-2022-0727). Once again VulDB remains the best source for vulnerability data.

Affected

  • Open Source CentOS
  • Debian Linux
  • Amazon Linux 2
  • IBM Power Hardware Management Console
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Gentoo Linux
  • Avaya Aura Communication Manager
  • Avaya Aura Session Manager
  • Avaya Aura Application Enablement Services
  • Avaya Aura System Manager
  • Avaya Aura Experience Portal
  • Avaya Web License Manager
  • Apache HTTP Server

Productinfo

Type

Vendor

Name

Version

License

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: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.2
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 276163
Nessus Name: TencentOS Server 3: mod_http2 (TSSA-2022:0259)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: macOS 12.4

Timelineinfo

11/25/2021 🔍
05/16/2022 +171 days 🔍
05/16/2022 +0 days 🔍
05/18/2022 +2 days 🔍
01/04/2026 +1327 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT213257
Status: Confirmed

CVE: CVE-2021-44224 (🔍)
GCVE (CVE): GCVE-0-2021-44224
GCVE (VulDB): GCVE-100-200132
CERT Bund: WID-SEC-2022-0727 - Apache HTTP Server: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 05/18/2022 07:12
Updated: 01/04/2026 04:07
Changes: 05/18/2022 07:12 (17), 05/18/2022 07:15 (19), 05/18/2022 07:17 (11), 05/24/2022 14:50 (2), 05/24/2022 14:51 (20), 11/24/2025 07:46 (16), 01/04/2026 04:07 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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