CVE-2021-32708

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-32708
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-32708.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-32708
Aliases
Related
Published
2021-06-24T17:15:08Z
Modified
2024-09-18T03:14:35.457687Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

Flysystem is an open source file storage library for PHP. The whitespace normalisation using in 1.x and 2.x removes any unicode whitespace. Under certain specific conditions this could potentially allow a malicious user to execute code remotely. The conditions are: A user is allowed to supply the path or filename of an uploaded file, the supplied path or filename is not checked against unicode chars, the supplied pathname checked against an extension deny-list, not an allow-list, the supplied path or filename contains a unicode whitespace char in the extension, the uploaded file is stored in a directory that allows PHP code to be executed. Given these conditions are met a user can upload and execute arbitrary code on the system under attack. The unicode whitespace removal has been replaced with a rejection (exception). For 1.x users, upgrade to 1.1.4. For 2.x users, upgrade to 2.1.1.

References

Affected packages

Debian:11 / php-league-flysystem

Package

Name
php-league-flysystem
Purl
pkg:deb/debian/php-league-flysystem?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.3-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / php-league-flysystem

Package

Name
php-league-flysystem
Purl
pkg:deb/debian/php-league-flysystem?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.3-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / php-league-flysystem

Package

Name
php-league-flysystem
Purl
pkg:deb/debian/php-league-flysystem?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.3-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/thephpleague/flysystem

Affected ranges

Type
GIT
Repo
https://github.com/thephpleague/flysystem
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a3c694de9f7e844b76f9d1b61296ebf6e8d89d74
Fixed
f3ad69181b8afed2c9edf7be5a2918144ff4ea32

Affected versions

0.*

0.1.0
0.1.1
0.1.10
0.1.11
0.1.12
0.1.13
0.1.14
0.1.15
0.1.16
0.1.17
0.1.18
0.1.19
0.1.2
0.1.20
0.1.3
0.1.4
0.1.5
0.1.6
0.1.7
0.1.8
0.1.9
0.2.0
0.2.1
0.2.10
0.2.11
0.2.12
0.2.13
0.2.14
0.2.15
0.2.2
0.2.3
0.2.4
0.2.5
0.2.6
0.2.7
0.2.8
0.2.9
0.3.0
0.3.1
0.3.2
0.3.3
0.3.4
0.3.5
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.4.5
0.5.0
0.5.1
0.5.10
0.5.11
0.5.12
0.5.2
0.5.3
0.5.4
0.5.5
0.5.6
0.5.7
0.5.8
0.5.9

1.*

1.0.0
1.0.0-alpha1
1.0.1
1.0.10
1.0.11
1.0.12
1.0.13
1.0.14
1.0.15
1.0.16
1.0.17
1.0.18
1.0.19
1.0.2
1.0.20
1.0.21
1.0.23
1.0.24
1.0.25
1.0.26
1.0.27
1.0.28
1.0.29
1.0.3
1.0.30
1.0.31
1.0.32
1.0.33
1.0.34
1.0.35
1.0.36
1.0.37
1.0.38
1.0.39
1.0.4
1.0.40
1.0.41
1.0.42
1.0.43
1.0.44
1.0.45
1.0.46
1.0.47
1.0.48
1.0.49
1.0.5
1.0.50
1.0.51
1.0.52
1.0.53
1.0.54
1.0.55
1.0.56
1.0.57
1.0.58
1.0.59
1.0.6
1.0.60
1.0.61
1.0.62
1.0.63
1.0.64
1.0.65
1.0.66
1.0.67
1.0.68
1.0.69
1.0.7
1.0.70
1.0.8
1.0.9
1.1.0
1.1.1
1.1.2
1.1.3

2.*

2.0.0
2.0.0-RC1
2.0.0-alpha.1
2.0.0-alpha.2
2.0.0-alpha.3
2.0.0-alpha.4
2.0.0-beta.1
2.0.0-beta.2
2.0.0-beta.3
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.1.0