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CVE-2021-32708
Detail
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Description
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.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
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CVE Modified by GitHub, Inc.11/06/2023 10:35:24 PM
Action
Type
Old Value
New Value
Added
Reference
GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NWPTENBYKI2IG47GI4DHAACLNRLTWUR5/ [No types assigned]
Added
Reference
GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNZSWK4GOMJOOHKLZEOE5AQSLC4DNCRZ/ [No types assigned]
Removed
Reference
GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NWPTENBYKI2IG47GI4DHAACLNRLTWUR5/
Removed
Reference
GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RNZSWK4GOMJOOHKLZEOE5AQSLC4DNCRZ/
Modified Analysis by NIST9/20/2021 2:50:33 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
*cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Added
CWE
NIST CWE-367
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NWPTENBYKI2IG47GI4DHAACLNRLTWUR5/ No Types Assigned
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NWPTENBYKI2IG47GI4DHAACLNRLTWUR5/ Mailing List, Third Party Advisory
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RNZSWK4GOMJOOHKLZEOE5AQSLC4DNCRZ/ No Types Assigned
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RNZSWK4GOMJOOHKLZEOE5AQSLC4DNCRZ/ Mailing List, Third Party Advisory
OR
*cpe:2.3:a:thephpleague:flysystem:*:*:*:*:*:*:*:* versions from (including) 1.0.0 up to (excluding) 1.1.4
*cpe:2.3:a:thephpleague:flysystem:*:*:*:*:*:*:*:* versions from (including) 2.0.0 up to (excluding) 2.1.1
Added
CVSS V2
NIST (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Added
CVSS V3.1
NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Changed
Reference Type
https://github.com/thephpleague/flysystem/commit/a3c694de9f7e844b76f9d1b61296ebf6e8d89d74 No Types Assigned
https://github.com/thephpleague/flysystem/commit/a3c694de9f7e844b76f9d1b61296ebf6e8d89d74 Patch, Third Party Advisory
Changed
Reference Type
https://github.com/thephpleague/flysystem/commit/f3ad69181b8afed2c9edf7be5a2918144ff4ea32 No Types Assigned
https://github.com/thephpleague/flysystem/commit/f3ad69181b8afed2c9edf7be5a2918144ff4ea32 Patch, Third Party Advisory
Changed
Reference Type
https://github.com/thephpleague/flysystem/security/advisories/GHSA-9f46-5r25-5wfm No Types Assigned
https://github.com/thephpleague/flysystem/security/advisories/GHSA-9f46-5r25-5wfm Patch, Third Party Advisory
Changed
Reference Type
https://packagist.org/packages/league/flysystem No Types Assigned
https://packagist.org/packages/league/flysystem Product, Third Party Advisory
Quick Info
CVE Dictionary Entry: CVE-2021-32708 NVD
Published Date: 06/24/2021 NVD
Last Modified: 11/06/2023
Source: GitHub, Inc.