CVE-2021-40438

Source
https://nvd.nist.gov/vuln/detail/CVE-2021-40438
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-40438.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-40438
Aliases
Related
Published
2021-09-16T15:15:07Z
Modified
2024-09-18T03:15:57.477956Z
Severity
  • 9.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.

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
2.4.49-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

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
2.4.49-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

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
2.4.49-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

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
2.4.49-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
2.4.49-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

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
2.4.49-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

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
2.4.49-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

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
2.4.49-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

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
2.4.49-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

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
2.4.49-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

Debian:11 / 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
2.4.51-1~deb11u1

Affected versions

2.*

2.4.48-3.1
2.4.48-3.1+deb11u1
2.4.48-4
2.4.49-1~bpo10+1
2.4.49-1~deb11u1
2.4.49-1~deb11u2
2.4.49-1~deb11u3
2.4.49-1
2.4.49-2
2.4.49-3
2.4.49-4
2.4.50-1~deb11u1
2.4.50-1
2.4.51-1~bpo10+1
2.4.51-1~bpo10+2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

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
2.4.49-1

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
2.4.49-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}