CVE-2021-32708
CVE-2021-32708 · Time-of-check Time-of-use (TOCTOU) Race Condition in league/flysystem
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
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.
CVSS 9.8 · Critique · EPSS 3,5% · Correctif disponible
- Publication
- Mise à jour
Produits et versions concernés
flysystem
- Versions du logiciel
- < 1.1.4: Concernée
- >= 2.0.0, < 2.1.1: Concernée
Aucun correctif publié
php-league-flysystem Debian:12
- Plages de versions concernées
- ECOSYSTEM: < 1.1.3-4
Mettez à jour vers 1.1.3-4
php-league-flysystem Debian:13
- Plages de versions concernées
- ECOSYSTEM: < 1.1.3-4
Mettez à jour vers 1.1.3-4
php-league-flysystem Debian:14
- Plages de versions concernées
- ECOSYSTEM: < 1.1.3-4
Mettez à jour vers 1.1.3-4
league/flysystem Packagist
- Versions du logiciel
- 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
- 1.0.0
- 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
- 1.0.22
- 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
- Plages de versions concernées
- ECOSYSTEM: < 1.1.4
Mettez à jour vers 1.1.4
league/flysystem Packagist
- Versions du logiciel
- 2.0.0
- 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
- Plages de versions concernées
- ECOSYSTEM: ≥ 2.0.0, < 2.1.1
Mettez à jour vers 2.1.1
php-league-flysystem Ubuntu:16.04:LTS
- Versions du logiciel
- 1.0.15-1
- 1.0.16-1
- 1.0.16-1build1
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
php-league-flysystem Ubuntu:22.04:LTS
- Versions du logiciel
- 1.1.3-4
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
php-league-flysystem Ubuntu:24.04:LTS
- Versions du logiciel
- 1.1.10-1
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
php-league-flysystem Ubuntu:25.10
- Versions du logiciel
- 3.29.1-2
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
php-league-flysystem Ubuntu:26.10
- Versions du logiciel
- 3.29.1-2
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
php-league-flysystem Ubuntu:26.04:LTS
- Versions du logiciel
- 3.29.1-2
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
Sources originales
- https://github.com/thephpleague/flysystem/security/advisories/GHSA-9f46-5r25-5wfm
- https://github.com/thephpleague/flysystem/commit/a3c694de9f7e844b76f9d1b61296ebf6e8d89d74
- https://github.com/thephpleague/flysystem/commit/f3ad69181b8afed2c9edf7be5a2918144ff4ea32
- https://packagist.org/packages/league/flysystem
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNZSWK4GOMJOOHKLZEOE5AQSLC4DNCRZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NWPTENBYKI2IG47GI4DHAACLNRLTWUR5/
- https://nvd.nist.gov/vuln/detail/CVE-2021-32708