Improper Authentication Affecting curl package, versions <8.0.1-r0
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Test your applications- Snyk ID SNYK-ALPINE316-CURL-5422121
- published 20 Mar 2023
- disclosed 30 Mar 2023
Introduced: 20 Mar 2023
CVE-2023-27535 Open this link in a new tabHow to fix?
Upgrade Alpine:3.16 curl to version 8.0.1-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Alpine.
See How to fix? for Alpine:3.16 relevant fixed versions and status.
An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.
References
- https://hackerone.com/reports/1892780
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/
- https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html
- https://security.netapp.com/advisory/ntap-20230420-0010/
- https://security.gentoo.org/glsa/202310-12
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/