Description
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.
No analysis available yet.
Remediation
No remediation available yet.
Tracking
Sign in to view the affected projects.
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-3398-1 | curl security update |
EUVD |
EUVD-2023-31290 | 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. |
Ubuntu USN |
USN-5964-1 | curl vulnerabilities |
Ubuntu USN |
USN-5964-2 | curl vulnerabilities |
References
History
Mon, 09 Jun 2025 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Subscriptions
Debian
Subscribe
Debian Linux
Subscribe
Fedoraproject
Subscribe
Fedora
Subscribe
Haxx
Subscribe
Libcurl
Subscribe
Netapp
Subscribe
Active Iq Unified Manager
Subscribe
H300s
Subscribe
H300s Firmware
Subscribe
H410s
Subscribe
H410s Firmware
Subscribe
H500s
Subscribe
H500s Firmware
Subscribe
H700s
Subscribe
H700s Firmware
Subscribe
Ontap 9
Subscribe
Redhat
Subscribe
Enterprise Linux
Subscribe
Rhel Eus
Subscribe
Splunk
Subscribe
Universal Forwarder
Subscribe
Status: PUBLISHED
Assigner: hackerone
Published:
Updated: 2025-06-09T14:47:57.951Z
Reserved: 2023-03-02T00:00:00.000Z
Link: CVE-2023-27535
Updated: 2024-08-02T12:16:35.540Z
Status : Modified
Published: 2023-03-30T20:15:07.483
Modified: 2025-06-09T15:15:28.903
Link: CVE-2023-27535
OpenCVE Enrichment
No data.
Debian DLA
EUVD
Ubuntu USN