CVE-2023-27537

A double free vulnerability exists in libcurl <8.0.0 when sharing HSTS data between separate "handles". This sharing was introduced without considerations for do this sharing across separate threads but there was no indication of this fact in the documentation. Due to missing mutexes or thread locks, two threads sharing the same HSTS data could end up doing a double-free or use-after-free.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:haxx:libcurl:7.88.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:libcurl:7.88.1:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
cpe:2.3:a:netapp:clustered_data_ontap:9.0:-:*:*:*:*:*:*
cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*

Configuration 7 (hide)

OR cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*

History

23 Oct 2026, 23:10

Type Values Removed Values Added
Summary
  • (es) Una vulnerabilidad de doble liberación existe en libcurl anterior a 8.0.0 al compartir datos HSTS entre 'handles' separados. Esta compartición fue introducida sin considerar realizarla entre hilos separados, pero no había ninguna indicación de este hecho en la documentación. Debido a la falta de mutexes o bloqueos de hilos, dos hilos que compartían los mismos datos HSTS podrían terminar realizando una doble liberación o un uso después de liberación.

14 Oct 2026, 23:17

Type Values Removed Values Added
References
  • () https://cert-portal.siemens.com/productcert/html/ssa-398330.html -
  • () https://cert-portal.siemens.com/productcert/html/ssa-943925.html -

Information

Published : 2023-03-30 20:15

Updated : 2026-10-23 23:10


NVD link : CVE-2023-27537

Mitre link : CVE-2023-27537

CVE.ORG link : CVE-2023-27537


JSON object : View

Products Affected

netapp

  • h500s
  • h700s_firmware
  • h300s_firmware
  • h410s
  • active_iq_unified_manager
  • h410s_firmware
  • h300s
  • h700s
  • clustered_data_ontap
  • h500s_firmware

splunk

  • universal_forwarder

broadcom

  • brocade_fabric_operating_system_firmware

haxx

  • libcurl
CWE
CWE-415

Double Free