Apache HTTP Server 2.4.49 HTTP/2 Request null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Apache HTTP Server 2.4.49. It has been classified as problematic. The impacted element is an unknown function of the component HTTP2 Request Handler. The manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2021-41524. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apache HTTP Server 2.4.49 (Web Server) and classified as problematic. This issue affects an unknown code block of the component HTTP2 Request Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. 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. Impacted is availability.

The weakness was shared 10/05/2021. It is possible to read the advisory at httpd.apache.org. The identification of this vulnerability is CVE-2021-41524 since 09/20/2021. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.4.50 eliminates this vulnerability. The upgrade is hosted for download at httpd.apache.org.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

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

CVSSv2info

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

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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: HTTP Server 2.4.50

Timelineinfo

09/20/2021 🔍
10/05/2021 +15 days 🔍
10/05/2021 +0 days 🔍
10/09/2021 +4 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: FEDORA-2021-5d2d4b6ac5
Status: Confirmed

CVE: CVE-2021-41524 (🔍)
GCVE (CVE): GCVE-0-2021-41524
GCVE (VulDB): GCVE-100-183839

Entryinfo

Created: 10/05/2021 13:22
Updated: 10/09/2021 09:22
Changes: 10/05/2021 13:22 (42), 10/09/2021 09:22 (2)
Complete: 🔍
Cache ID: 216::103

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