IM
IronMonkey Threat Research

CVE-2023-27538 HIGH

Published: 2023-03-30 | Last Modified: 2025-06-09 | Status: Modified

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.

CVSS Metrics

Base Score: 5.5 (MEDIUM)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactHIGH
Integrity ImpactNONE
Availability ImpactNONE

Source: [email protected]

Type: Primary

Exploitability Score: 1.8

Impact Score: 3.6

Weaknesses

Source Type Description
[email protected] Secondary
en CWE-305
[email protected] Primary
en CWE-287

Affected Products

Vendor Product Version Update Type
haxx libcurl * <built-in method update of dict object at 0x7fd39c4451c0> Application
fedoraproject fedora 36 <built-in method update of dict object at 0x7fd39c447400> Operating System
debian debian_linux 10.0 <built-in method update of dict object at 0x7fd36b185480> Operating System
netapp active_iq_unified_manager - <built-in method update of dict object at 0x7fd36b185740> Application
netapp clustered_data_ontap 9.0 <built-in method update of dict object at 0x7fd39c446740> Application
broadcom brocade_fabric_operating_system_firmware - <built-in method update of dict object at 0x7fd39c444900> Operating System
netapp h300s_firmware - <built-in method update of dict object at 0x7fd36b185180> Operating System
netapp h500s_firmware - <built-in method update of dict object at 0x7fd36b184340> Operating System
netapp h700s_firmware - <built-in method update of dict object at 0x7fd2dbe94c80> Operating System
netapp h410s_firmware - <built-in method update of dict object at 0x7fd39c444480> Operating System
splunk universal_forwarder * <built-in method update of dict object at 0x7fd36a001800> Application
splunk universal_forwarder * <built-in method update of dict object at 0x7fd39c446980> Application
splunk universal_forwarder 9.1.0 <built-in method update of dict object at 0x7fd36a000600> Application

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
Yes cpe:2.3:a:netapp:clustered_data_ontap:9.0:-:*:*:*:*:*:*
Yes cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*

References