Vulnerability Details CVE-2023-27538
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 0.7%
CVSS Severity
CVSS v3 Score 5.5
Products affected by CVE-2023-27538
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cpe:2.3:a:haxx:libcurl:7.16.1
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cpe:2.3:a:haxx:libcurl:7.16.2
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cpe:2.3:a:haxx:libcurl:7.16.3
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cpe:2.3:a:haxx:libcurl:7.16.4
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cpe:2.3:a:haxx:libcurl:7.17.0
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cpe:2.3:a:haxx:libcurl:7.17.1
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cpe:2.3:a:haxx:libcurl:7.18.0
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cpe:2.3:a:haxx:libcurl:7.18.1
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cpe:2.3:a:haxx:libcurl:7.18.2
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cpe:2.3:a:haxx:libcurl:7.19.0
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cpe:2.3:a:haxx:libcurl:7.19.1
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cpe:2.3:a:haxx:libcurl:7.19.2
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cpe:2.3:a:haxx:libcurl:7.19.3
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cpe:2.3:a:haxx:libcurl:7.19.4
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cpe:2.3:a:haxx:libcurl:7.19.5
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cpe:2.3:a:haxx:libcurl:7.19.6
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cpe:2.3:a:haxx:libcurl:7.19.7
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cpe:2.3:a:haxx:libcurl:7.20.0
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cpe:2.3:a:haxx:libcurl:7.20.1
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cpe:2.3:a:haxx:libcurl:7.21.0
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cpe:2.3:a:haxx:libcurl:7.21.1
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cpe:2.3:a:haxx:libcurl:7.21.2
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cpe:2.3:a:haxx:libcurl:7.21.3
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cpe:2.3:a:haxx:libcurl:7.21.4
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cpe:2.3:a:haxx:libcurl:7.21.5
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cpe:2.3:a:haxx:libcurl:7.21.6
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cpe:2.3:a:haxx:libcurl:7.21.7
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cpe:2.3:a:haxx:libcurl:7.22.0
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cpe:2.3:a:haxx:libcurl:7.23.0
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cpe:2.3:a:haxx:libcurl:7.23.1
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cpe:2.3:a:haxx:libcurl:7.24.0
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cpe:2.3:a:haxx:libcurl:7.25.0
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cpe:2.3:a:haxx:libcurl:7.26.0
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cpe:2.3:a:haxx:libcurl:7.27.0
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cpe:2.3:a:haxx:libcurl:7.28.0
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cpe:2.3:a:haxx:libcurl:7.28.1
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cpe:2.3:a:haxx:libcurl:7.29.0
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cpe:2.3:a:haxx:libcurl:7.30.0
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cpe:2.3:a:haxx:libcurl:7.31.0
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cpe:2.3:a:haxx:libcurl:7.32.0
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cpe:2.3:a:haxx:libcurl:7.33.0
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cpe:2.3:a:haxx:libcurl:7.34.0
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cpe:2.3:a:haxx:libcurl:7.35.0
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cpe:2.3:a:haxx:libcurl:7.36.0
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cpe:2.3:a:haxx:libcurl:7.37.0
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cpe:2.3:a:haxx:libcurl:7.37.1
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cpe:2.3:a:haxx:libcurl:7.38.0
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cpe:2.3:a:haxx:libcurl:7.39
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cpe:2.3:a:haxx:libcurl:7.39.0
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cpe:2.3:a:haxx:libcurl:7.40.0
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cpe:2.3:a:haxx:libcurl:7.41.0
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cpe:2.3:a:haxx:libcurl:7.42
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cpe:2.3:a:haxx:libcurl:7.42.0
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cpe:2.3:a:haxx:libcurl:7.42.1
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cpe:2.3:a:haxx:libcurl:7.43.0
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cpe:2.3:a:haxx:libcurl:7.44.0
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cpe:2.3:a:haxx:libcurl:7.45.0
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cpe:2.3:a:haxx:libcurl:7.46.0
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cpe:2.3:a:haxx:libcurl:7.47.0
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cpe:2.3:a:haxx:libcurl:7.47.1
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cpe:2.3:a:haxx:libcurl:7.48.0
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cpe:2.3:a:haxx:libcurl:7.49.0
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cpe:2.3:a:haxx:libcurl:7.49.1
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cpe:2.3:a:haxx:libcurl:7.50.0
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cpe:2.3:a:haxx:libcurl:7.50.1
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cpe:2.3:a:haxx:libcurl:7.50.2
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cpe:2.3:a:haxx:libcurl:7.50.3
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cpe:2.3:a:haxx:libcurl:7.51.0
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cpe:2.3:a:haxx:libcurl:7.52.0
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cpe:2.3:a:haxx:libcurl:7.52.1
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cpe:2.3:a:haxx:libcurl:7.53.0
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cpe:2.3:a:haxx:libcurl:7.53.1
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cpe:2.3:a:haxx:libcurl:7.54.0
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cpe:2.3:a:haxx:libcurl:7.54.1
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cpe:2.3:a:haxx:libcurl:7.55.0
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cpe:2.3:a:haxx:libcurl:7.55.1
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cpe:2.3:a:haxx:libcurl:7.56.0
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cpe:2.3:a:haxx:libcurl:7.56.1
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cpe:2.3:a:haxx:libcurl:7.57.0
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cpe:2.3:a:haxx:libcurl:7.58.0
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cpe:2.3:a:haxx:libcurl:7.59.0
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cpe:2.3:a:haxx:libcurl:7.60.0
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cpe:2.3:a:haxx:libcurl:7.61.0
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cpe:2.3:a:haxx:libcurl:7.61.1
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cpe:2.3:a:haxx:libcurl:7.62.0
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cpe:2.3:a:haxx:libcurl:7.63.0
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cpe:2.3:a:haxx:libcurl:7.64.0
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cpe:2.3:a:haxx:libcurl:7.64.1
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cpe:2.3:a:haxx:libcurl:7.65.0
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cpe:2.3:a:haxx:libcurl:7.65.1
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cpe:2.3:a:haxx:libcurl:7.65.2
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cpe:2.3:a:haxx:libcurl:7.65.3
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cpe:2.3:a:haxx:libcurl:7.66.0
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cpe:2.3:a:haxx:libcurl:7.67.0
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cpe:2.3:a:haxx:libcurl:7.68.0
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cpe:2.3:a:haxx:libcurl:7.69.0
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cpe:2.3:a:haxx:libcurl:7.69.1
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cpe:2.3:a:haxx:libcurl:7.70.0
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cpe:2.3:a:haxx:libcurl:7.71.0
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cpe:2.3:a:haxx:libcurl:7.71.1
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cpe:2.3:a:haxx:libcurl:7.72.0
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cpe:2.3:a:haxx:libcurl:7.73.0
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cpe:2.3:a:haxx:libcurl:7.74.0
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cpe:2.3:a:haxx:libcurl:7.75.0
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cpe:2.3:a:haxx:libcurl:7.77.0
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cpe:2.3:a:haxx:libcurl:7.78.0
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cpe:2.3:a:haxx:libcurl:7.79.0
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cpe:2.3:a:haxx:libcurl:7.79.1
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cpe:2.3:a:haxx:libcurl:7.80.0
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cpe:2.3:a:haxx:libcurl:7.81.0
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cpe:2.3:a:haxx:libcurl:7.82.0
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cpe:2.3:a:haxx:libcurl:7.83.0
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cpe:2.3:a:haxx:libcurl:7.83.1
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cpe:2.3:a:haxx:libcurl:7.84.0
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cpe:2.3:a:haxx:libcurl:7.85.0
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cpe:2.3:a:haxx:libcurl:7.86.0
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cpe:2.3:a:haxx:libcurl:7.87.0
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cpe:2.3:a:haxx:libcurl:7.88.0
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cpe:2.3:a:haxx:libcurl:7.88.1
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cpe:2.3:a:netapp:active_iq_unified_manager:-
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cpe:2.3:a:netapp:clustered_data_ontap:9.0
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cpe:2.3:a:splunk:universal_forwarder:8.2.0
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cpe:2.3:a:splunk:universal_forwarder:8.2.10
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cpe:2.3:a:splunk:universal_forwarder:8.2.11
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cpe:2.3:a:splunk:universal_forwarder:8.2.6
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cpe:2.3:a:splunk:universal_forwarder:8.2.7
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cpe:2.3:a:splunk:universal_forwarder:8.2.8
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cpe:2.3:a:splunk:universal_forwarder:8.2.9
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cpe:2.3:a:splunk:universal_forwarder:9.0.0
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cpe:2.3:a:splunk:universal_forwarder:9.0.1
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cpe:2.3:a:splunk:universal_forwarder:9.0.2
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cpe:2.3:a:splunk:universal_forwarder:9.0.3
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cpe:2.3:a:splunk:universal_forwarder:9.0.4
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cpe:2.3:a:splunk:universal_forwarder:9.0.5
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cpe:2.3:a:splunk:universal_forwarder:9.1.0
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cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:fedoraproject:fedora:36
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cpe:2.3:o:netapp:h300s_firmware:-
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cpe:2.3:o:netapp:h410s_firmware:-
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cpe:2.3:o:netapp:h500s_firmware:-
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cpe:2.3:o:netapp:h700s_firmware:-