CVE-2023-27538
Medium
Description
An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Haxx Libcurl
PublishedMar 30, 2023
First seenMar 30, 2023
Weakness typeCWE-305CWE-305
How to fix
Update
- haxx libcurl8.0.0 or later
- splunk universal_forwarder8.2.12, 9.0.6 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| haxx libcurl | 7.16.1 ≤ v < 8.0.0 | 8.0.0 |
| fedoraproject fedora | 36 | — |
| debian debian_linux | 10.0 | — |
| netapp active_iq_unified_manager | No range specified | — |
| netapp clustered_data_ontap | 9.0 | — |
| broadcom brocade_fabric_operating_system_firmware | No range specified | — |
| netapp h300s_firmware | No range specified | — |
| netapp h500s_firmware | No range specified | — |
| netapp h700s_firmware | No range specified | — |
| netapp h410s_firmware | No range specified | — |
| splunk universal_forwarder | 8.2.0 ≤ v < 8.2.12, 9.0.0 ≤ v < 9.0.6, 9.1.0 | 8.2.12, 9.0.6 |
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