CVE-2021-41524

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Please try reporting it to the source first.
Source
https://nvd.nist.gov/vuln/detail/CVE-2021-41524
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-41524.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-41524
Aliases
Related
Published
2021-10-05T09:15:07Z
Modified
2024-09-18T03:17:23.434747Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specially crafted request. The vulnerability was recently introduced in version 2.4.49. No exploit is known to the project.

References

Affected packages

Alpine:v3.11 / apache2

Package

Name
apache2
Purl
pkg:apk/alpine/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-r0

Affected versions

2.*

2.2.16-r0
2.2.16-r1
2.2.16-r2
2.2.16-r3
2.2.17-r0
2.2.17-r1
2.2.17-r2
2.2.17-r3
2.2.17-r4
2.2.17-r5
2.2.20-r0
2.2.21-r0
2.2.21-r1
2.2.21-r2
2.2.21-r3
2.2.22-r0
2.2.22-r1
2.4.3-r0
2.4.3-r1
2.4.3-r2
2.4.4-r0
2.4.4-r1
2.4.6-r0
2.4.6-r1
2.4.6-r2
2.4.6-r3
2.4.6-r4
2.4.7-r0
2.4.9-r0
2.4.9-r1
2.4.10-r0
2.4.12-r0
2.4.12-r1
2.4.12-r2
2.4.12-r3
2.4.12-r4
2.4.16-r0
2.4.17-r0
2.4.17-r1
2.4.17-r2
2.4.17-r3
2.4.17-r4
2.4.17-r5
2.4.17-r6
2.4.17-r7
2.4.18-r0
2.4.18-r1
2.4.18-r2
2.4.20-r0
2.4.20-r1
2.4.20-r2
2.4.23-r0
2.4.23-r1
2.4.23-r2
2.4.23-r3
2.4.23-r4
2.4.23-r5
2.4.23-r6
2.4.23-r7
2.4.23-r8
2.4.23-r9
2.4.23-r10
2.4.25-r0
2.4.25-r1
2.4.26-r0
2.4.27-r0
2.4.27-r1
2.4.27-r2
2.4.28-r0
2.4.29-r0
2.4.29-r1
2.4.33-r0
2.4.33-r1
2.4.34-r0
2.4.35-r0
2.4.37-r0
2.4.37-r1
2.4.38-r0
2.4.38-r1
2.4.38-r2
2.4.39-r0
2.4.41-r0
2.4.43-r0
2.4.46-r0
2.4.48-r0
2.4.49-r0

Alpine:v3.12 / apache2

Package

Name
apache2
Purl
pkg:apk/alpine/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-r0

Affected versions

2.*

2.2.16-r0
2.2.16-r1
2.2.16-r2
2.2.16-r3
2.2.17-r0
2.2.17-r1
2.2.17-r2
2.2.17-r3
2.2.17-r4
2.2.17-r5
2.2.20-r0
2.2.21-r0
2.2.21-r1
2.2.21-r2
2.2.21-r3
2.2.22-r0
2.2.22-r1
2.4.3-r0
2.4.3-r1
2.4.3-r2
2.4.4-r0
2.4.4-r1
2.4.6-r0
2.4.6-r1
2.4.6-r2
2.4.6-r3
2.4.6-r4
2.4.7-r0
2.4.9-r0
2.4.9-r1
2.4.10-r0
2.4.12-r0
2.4.12-r1
2.4.12-r2
2.4.12-r3
2.4.12-r4
2.4.16-r0
2.4.17-r0
2.4.17-r1
2.4.17-r2
2.4.17-r3
2.4.17-r4
2.4.17-r5
2.4.17-r6
2.4.17-r7
2.4.18-r0
2.4.18-r1
2.4.18-r2
2.4.20-r0
2.4.20-r1
2.4.20-r2
2.4.23-r0
2.4.23-r1
2.4.23-r2
2.4.23-r3
2.4.23-r4
2.4.23-r5
2.4.23-r6
2.4.23-r7
2.4.23-r8
2.4.23-r9
2.4.23-r10
2.4.25-r0
2.4.25-r1
2.4.26-r0
2.4.27-r0
2.4.27-r1
2.4.27-r2
2.4.28-r0
2.4.29-r0
2.4.29-r1
2.4.33-r0
2.4.33-r1
2.4.34-r0
2.4.35-r0
2.4.37-r0
2.4.37-r1
2.4.38-r0
2.4.38-r1
2.4.38-r2
2.4.39-r0
2.4.41-r0
2.4.43-r0
2.4.46-r0
2.4.46-r1
2.4.48-r0
2.4.49-r0

Alpine:v3.13 / apache2

Package

Name
apache2
Purl
pkg:apk/alpine/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-r0

Affected versions

2.*

2.2.16-r0
2.2.16-r1
2.2.16-r2
2.2.16-r3
2.2.17-r0
2.2.17-r1
2.2.17-r2
2.2.17-r3
2.2.17-r4
2.2.17-r5
2.2.20-r0
2.2.21-r0
2.2.21-r1
2.2.21-r2
2.2.21-r3
2.2.22-r0
2.2.22-r1
2.4.3-r0
2.4.3-r1
2.4.3-r2
2.4.4-r0
2.4.4-r1
2.4.6-r0
2.4.6-r1
2.4.6-r2
2.4.6-r3
2.4.6-r4
2.4.7-r0
2.4.9-r0
2.4.9-r1
2.4.10-r0
2.4.12-r0
2.4.12-r1
2.4.12-r2
2.4.12-r3
2.4.12-r4
2.4.16-r0
2.4.17-r0
2.4.17-r1
2.4.17-r2
2.4.17-r3
2.4.17-r4
2.4.17-r5
2.4.17-r6
2.4.17-r7
2.4.18-r0
2.4.18-r1
2.4.18-r2
2.4.20-r0
2.4.20-r1
2.4.20-r2
2.4.23-r0
2.4.23-r1
2.4.23-r2
2.4.23-r3
2.4.23-r4
2.4.23-r5
2.4.23-r6
2.4.23-r7
2.4.23-r8
2.4.23-r9
2.4.23-r10
2.4.25-r0
2.4.25-r1
2.4.26-r0
2.4.27-r0
2.4.27-r1
2.4.27-r2
2.4.28-r0
2.4.29-r0
2.4.29-r1
2.4.33-r0
2.4.33-r1
2.4.34-r0
2.4.35-r0
2.4.37-r0
2.4.37-r1
2.4.38-r0
2.4.38-r1
2.4.38-r2
2.4.39-r0
2.4.41-r0
2.4.43-r0
2.4.46-r0
2.4.46-r1
2.4.46-r2
2.4.46-r3
2.4.48-r0
2.4.49-r0

Alpine:v3.14 / apache2

Package

Name
apache2
Purl
pkg:apk/alpine/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-r0

Affected versions

2.*

2.2.16-r0
2.2.16-r1
2.2.16-r2
2.2.16-r3
2.2.17-r0
2.2.17-r1
2.2.17-r2
2.2.17-r3
2.2.17-r4
2.2.17-r5
2.2.20-r0
2.2.21-r0
2.2.21-r1
2.2.21-r2
2.2.21-r3
2.2.22-r0
2.2.22-r1
2.4.3-r0
2.4.3-r1
2.4.3-r2
2.4.4-r0
2.4.4-r1
2.4.6-r0
2.4.6-r1
2.4.6-r2
2.4.6-r3
2.4.6-r4
2.4.7-r0
2.4.9-r0
2.4.9-r1
2.4.10-r0
2.4.12-r0
2.4.12-r1
2.4.12-r2
2.4.12-r3
2.4.12-r4
2.4.16-r0
2.4.17-r0
2.4.17-r1
2.4.17-r2
2.4.17-r3
2.4.17-r4
2.4.17-r5
2.4.17-r6
2.4.17-r7
2.4.18-r0
2.4.18-r1
2.4.18-r2
2.4.20-r0
2.4.20-r1
2.4.20-r2
2.4.23-r0
2.4.23-r1
2.4.23-r2
2.4.23-r3
2.4.23-r4
2.4.23-r5
2.4.23-r6
2.4.23-r7
2.4.23-r8
2.4.23-r9
2.4.23-r10
2.4.25-r0
2.4.25-r1
2.4.26-r0
2.4.27-r0
2.4.27-r1
2.4.27-r2
2.4.28-r0
2.4.29-r0
2.4.29-r1
2.4.33-r0
2.4.33-r1
2.4.34-r0
2.4.35-r0
2.4.37-r0
2.4.37-r1
2.4.38-r0
2.4.38-r1
2.4.38-r2
2.4.39-r0
2.4.41-r0
2.4.43-r0
2.4.46-r0
2.4.46-r1
2.4.46-r2
2.4.46-r3

Alpine:v3.15 / apache2

Package

Name
apache2
Purl
pkg:apk/alpine/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-r0

Affected versions

2.*

2.2.16-r0
2.2.16-r1
2.2.16-r2
2.2.16-r3
2.2.17-r0
2.2.17-r1
2.2.17-r2
2.2.17-r3
2.2.17-r4
2.2.17-r5
2.2.20-r0
2.2.21-r0
2.2.21-r1
2.2.21-r2
2.2.21-r3
2.2.22-r0
2.2.22-r1
2.4.3-r0
2.4.3-r1
2.4.3-r2
2.4.4-r0
2.4.4-r1
2.4.6-r0
2.4.6-r1
2.4.6-r2
2.4.6-r3
2.4.6-r4
2.4.7-r0
2.4.9-r0
2.4.9-r1
2.4.10-r0
2.4.12-r0
2.4.12-r1
2.4.12-r2
2.4.12-r3
2.4.12-r4
2.4.16-r0
2.4.17-r0
2.4.17-r1
2.4.17-r2
2.4.17-r3
2.4.17-r4
2.4.17-r5
2.4.17-r6
2.4.17-r7
2.4.18-r0
2.4.18-r1
2.4.18-r2
2.4.20-r0
2.4.20-r1
2.4.20-r2
2.4.23-r0
2.4.23-r1
2.4.23-r2
2.4.23-r3
2.4.23-r4
2.4.23-r5
2.4.23-r6
2.4.23-r7
2.4.23-r8
2.4.23-r9
2.4.23-r10
2.4.25-r0
2.4.25-r1
2.4.26-r0
2.4.27-r0
2.4.27-r1
2.4.27-r2
2.4.28-r0
2.4.29-r0
2.4.29-r1
2.4.33-r0
2.4.33-r1
2.4.34-r0
2.4.35-r0
2.4.37-r0
2.4.37-r1
2.4.38-r0
2.4.38-r1
2.4.38-r2
2.4.39-r0
2.4.41-r0
2.4.43-r0
2.4.46-r0
2.4.46-r1
2.4.46-r2
2.4.46-r3
2.4.48-r0
2.4.48-r1
2.4.48-r2
2.4.49-r1

Alpine:v3.16 / apache2

Package

Name
apache2
Purl
pkg:apk/alpine/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-r0

Affected versions

2.*

2.2.16-r0
2.2.16-r1
2.2.16-r2
2.2.16-r3
2.2.17-r0
2.2.17-r1
2.2.17-r2
2.2.17-r3
2.2.17-r4
2.2.17-r5
2.2.20-r0
2.2.21-r0
2.2.21-r1
2.2.21-r2
2.2.21-r3
2.2.22-r0
2.2.22-r1
2.4.3-r0
2.4.3-r1
2.4.3-r2
2.4.4-r0
2.4.4-r1
2.4.6-r0
2.4.6-r1
2.4.6-r2
2.4.6-r3
2.4.6-r4
2.4.7-r0
2.4.9-r0
2.4.9-r1
2.4.10-r0
2.4.12-r0
2.4.12-r1
2.4.12-r2
2.4.12-r3
2.4.12-r4
2.4.16-r0
2.4.17-r0
2.4.17-r1
2.4.17-r2
2.4.17-r3
2.4.17-r4
2.4.17-r5
2.4.17-r6
2.4.17-r7
2.4.18-r0
2.4.18-r1
2.4.18-r2
2.4.20-r0
2.4.20-r1
2.4.20-r2
2.4.23-r0
2.4.23-r1
2.4.23-r2
2.4.23-r3
2.4.23-r4
2.4.23-r5
2.4.23-r6
2.4.23-r7
2.4.23-r8
2.4.23-r9
2.4.23-r10
2.4.25-r0
2.4.25-r1
2.4.26-r0
2.4.27-r0
2.4.27-r1
2.4.27-r2
2.4.28-r0
2.4.29-r0
2.4.29-r1
2.4.33-r0
2.4.33-r1
2.4.34-r0
2.4.35-r0
2.4.37-r0
2.4.37-r1
2.4.38-r0
2.4.38-r1
2.4.38-r2
2.4.39-r0
2.4.41-r0
2.4.43-r0
2.4.46-r0
2.4.46-r1
2.4.46-r2
2.4.46-r3
2.4.48-r0
2.4.48-r1
2.4.48-r2
2.4.49-r1

Alpine:v3.17 / apache2

Package

Name
apache2
Purl
pkg:apk/alpine/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-r0

Affected versions

2.*

2.2.16-r0
2.2.16-r1
2.2.16-r2
2.2.16-r3
2.2.17-r0
2.2.17-r1
2.2.17-r2
2.2.17-r3
2.2.17-r4
2.2.17-r5
2.2.20-r0
2.2.21-r0
2.2.21-r1
2.2.21-r2
2.2.21-r3
2.2.22-r0
2.2.22-r1
2.4.3-r0
2.4.3-r1
2.4.3-r2
2.4.4-r0
2.4.4-r1
2.4.6-r0
2.4.6-r1
2.4.6-r2
2.4.6-r3
2.4.6-r4
2.4.7-r0
2.4.9-r0
2.4.9-r1
2.4.10-r0
2.4.12-r0
2.4.12-r1
2.4.12-r2
2.4.12-r3
2.4.12-r4
2.4.16-r0
2.4.17-r0
2.4.17-r1
2.4.17-r2
2.4.17-r3
2.4.17-r4
2.4.17-r5
2.4.17-r6
2.4.17-r7
2.4.18-r0
2.4.18-r1
2.4.18-r2
2.4.20-r0
2.4.20-r1
2.4.20-r2
2.4.23-r0
2.4.23-r1
2.4.23-r2
2.4.23-r3
2.4.23-r4
2.4.23-r5
2.4.23-r6
2.4.23-r7
2.4.23-r8
2.4.23-r9
2.4.23-r10
2.4.25-r0
2.4.25-r1
2.4.26-r0
2.4.27-r0
2.4.27-r1
2.4.27-r2
2.4.28-r0
2.4.29-r0
2.4.29-r1
2.4.33-r0
2.4.33-r1
2.4.34-r0
2.4.35-r0
2.4.37-r0
2.4.37-r1
2.4.38-r0
2.4.38-r1
2.4.38-r2
2.4.39-r0
2.4.41-r0
2.4.43-r0
2.4.46-r0
2.4.46-r1
2.4.46-r2
2.4.46-r3
2.4.48-r0
2.4.48-r1
2.4.48-r2
2.4.49-r1

Alpine:v3.18 / apache2

Package

Name
apache2
Purl
pkg:apk/alpine/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-r0

Affected versions

2.*

2.2.16-r0
2.2.16-r1
2.2.16-r2
2.2.16-r3
2.2.17-r0
2.2.17-r1
2.2.17-r2
2.2.17-r3
2.2.17-r4
2.2.17-r5
2.2.20-r0
2.2.21-r0
2.2.21-r1
2.2.21-r2
2.2.21-r3
2.2.22-r0
2.2.22-r1
2.4.3-r0
2.4.3-r1
2.4.3-r2
2.4.4-r0
2.4.4-r1
2.4.6-r0
2.4.6-r1
2.4.6-r2
2.4.6-r3
2.4.6-r4
2.4.7-r0
2.4.9-r0
2.4.9-r1
2.4.10-r0
2.4.12-r0
2.4.12-r1
2.4.12-r2
2.4.12-r3
2.4.12-r4
2.4.16-r0
2.4.17-r0
2.4.17-r1
2.4.17-r2
2.4.17-r3
2.4.17-r4
2.4.17-r5
2.4.17-r6
2.4.17-r7
2.4.18-r0
2.4.18-r1
2.4.18-r2
2.4.20-r0
2.4.20-r1
2.4.20-r2
2.4.23-r0
2.4.23-r1
2.4.23-r2
2.4.23-r3
2.4.23-r4
2.4.23-r5
2.4.23-r6
2.4.23-r7
2.4.23-r8
2.4.23-r9
2.4.23-r10
2.4.25-r0
2.4.25-r1
2.4.26-r0
2.4.27-r0
2.4.27-r1
2.4.27-r2
2.4.28-r0
2.4.29-r0
2.4.29-r1
2.4.33-r0
2.4.33-r1
2.4.34-r0
2.4.35-r0
2.4.37-r0
2.4.37-r1
2.4.38-r0
2.4.38-r1
2.4.38-r2
2.4.39-r0
2.4.41-r0
2.4.43-r0
2.4.46-r0
2.4.46-r1
2.4.46-r2
2.4.46-r3
2.4.48-r0
2.4.48-r1
2.4.48-r2
2.4.49-r1

Alpine:v3.19 / apache2

Package

Name
apache2
Purl
pkg:apk/alpine/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-r0

Affected versions

2.*

2.2.16-r0
2.2.16-r1
2.2.16-r2
2.2.16-r3
2.2.17-r0
2.2.17-r1
2.2.17-r2
2.2.17-r3
2.2.17-r4
2.2.17-r5
2.2.20-r0
2.2.21-r0
2.2.21-r1
2.2.21-r2
2.2.21-r3
2.2.22-r0
2.2.22-r1
2.4.3-r0
2.4.3-r1
2.4.3-r2
2.4.4-r0
2.4.4-r1
2.4.6-r0
2.4.6-r1
2.4.6-r2
2.4.6-r3
2.4.6-r4
2.4.7-r0
2.4.9-r0
2.4.9-r1
2.4.10-r0
2.4.12-r0
2.4.12-r1
2.4.12-r2
2.4.12-r3
2.4.12-r4
2.4.16-r0
2.4.17-r0
2.4.17-r1
2.4.17-r2
2.4.17-r3
2.4.17-r4
2.4.17-r5
2.4.17-r6
2.4.17-r7
2.4.18-r0
2.4.18-r1
2.4.18-r2
2.4.20-r0
2.4.20-r1
2.4.20-r2
2.4.23-r0
2.4.23-r1
2.4.23-r2
2.4.23-r3
2.4.23-r4
2.4.23-r5
2.4.23-r6
2.4.23-r7
2.4.23-r8
2.4.23-r9
2.4.23-r10
2.4.25-r0
2.4.25-r1
2.4.26-r0
2.4.27-r0
2.4.27-r1
2.4.27-r2
2.4.28-r0
2.4.29-r0
2.4.29-r1
2.4.33-r0
2.4.33-r1
2.4.34-r0
2.4.35-r0
2.4.37-r0
2.4.37-r1
2.4.38-r0
2.4.38-r1
2.4.38-r2
2.4.39-r0
2.4.41-r0
2.4.43-r0
2.4.46-r0
2.4.46-r1
2.4.46-r2
2.4.46-r3
2.4.48-r0
2.4.48-r1
2.4.48-r2
2.4.49-r1

Alpine:v3.20 / apache2

Package

Name
apache2
Purl
pkg:apk/alpine/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-r0

Affected versions

2.*

2.2.16-r0
2.2.16-r1
2.2.16-r2
2.2.16-r3
2.2.17-r0
2.2.17-r1
2.2.17-r2
2.2.17-r3
2.2.17-r4
2.2.17-r5
2.2.20-r0
2.2.21-r0
2.2.21-r1
2.2.21-r2
2.2.21-r3
2.2.22-r0
2.2.22-r1
2.4.3-r0
2.4.3-r1
2.4.3-r2
2.4.4-r0
2.4.4-r1
2.4.6-r0
2.4.6-r1
2.4.6-r2
2.4.6-r3
2.4.6-r4
2.4.7-r0
2.4.9-r0
2.4.9-r1
2.4.10-r0
2.4.12-r0
2.4.12-r1
2.4.12-r2
2.4.12-r3
2.4.12-r4
2.4.16-r0
2.4.17-r0
2.4.17-r1
2.4.17-r2
2.4.17-r3
2.4.17-r4
2.4.17-r5
2.4.17-r6
2.4.17-r7
2.4.18-r0
2.4.18-r1
2.4.18-r2
2.4.20-r0
2.4.20-r1
2.4.20-r2
2.4.23-r0
2.4.23-r1
2.4.23-r2
2.4.23-r3
2.4.23-r4
2.4.23-r5
2.4.23-r6
2.4.23-r7
2.4.23-r8
2.4.23-r9
2.4.23-r10
2.4.25-r0
2.4.25-r1
2.4.26-r0
2.4.27-r0
2.4.27-r1
2.4.27-r2
2.4.28-r0
2.4.29-r0
2.4.29-r1
2.4.33-r0
2.4.33-r1
2.4.34-r0
2.4.35-r0
2.4.37-r0
2.4.37-r1
2.4.38-r0
2.4.38-r1
2.4.38-r2
2.4.39-r0
2.4.41-r0
2.4.43-r0
2.4.46-r0
2.4.46-r1
2.4.46-r2
2.4.46-r3
2.4.48-r0
2.4.48-r1
2.4.48-r2
2.4.49-r1

Debian:12 / apache2

Package

Name
apache2
Purl
pkg:deb/debian/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / apache2

Package

Name
apache2
Purl
pkg:deb/debian/apache2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.50-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/apache/httpd

Affected ranges

Type
GIT
Repo
https://github.com/apache/httpd
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
bbacd798d1494b5a99f4e3edab068ccc77b03b7e