Vulnerability Monitor

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CVE-2021-22926

libcurl-using applications can ask for a specific client certificate to be used in a transfer. This is done with the `CURLOPT_SSLCERT` option (`--cert` with the command line tool).When libcurl is built to use the macOS native TLS library Secure Transport, an application can ask for the client certificate by name or with a file name - using the same option. If the name exists as a file, it will be used instead of by name.If the appliction runs with a current working directory that is writable by other users (like `/tmp`), a malicious user can create a file name with the same name as the app wants to use by name, and thereby trick the application to use the file based cert instead of the one referred to by name making libcurl send the wrong client certificate in the TLS connection handshake.

Published

2021-08-05T21:15:11.553

Last Modified

2024-11-21T05:50:56.047

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-840
  • Type: Primary
    CWE-295
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application haxx curl < 7.78.0 Yes
Application netapp active_iq_unified_manager - Yes
Application netapp active_iq_unified_manager - Yes
Application netapp clustered_data_ontap - Yes
Application netapp hci_management_node - Yes
Application netapp oncommand_insight - Yes
Application netapp oncommand_workflow_automation - Yes
Application netapp snapcenter - Yes
Application netapp solidfire - Yes
Application oracle mysql_server ≤ 5.7.35 Yes
Application oracle mysql_server ≤ 8.0.26 Yes
Application oracle peoplesoft_enterprise_peopletools 8.57 Yes
Application oracle peoplesoft_enterprise_peopletools 8.58 Yes
Application oracle peoplesoft_enterprise_peopletools 8.59 Yes
Application siemens sinec_infrastructure_network_services < 1.0.1.1 Yes
Operating System netapp h300s_firmware - Yes
Hardware netapp h300s - No
Operating System netapp h300e_firmware - Yes
Hardware netapp h300e - No
Operating System netapp h500e_firmware - Yes
Hardware netapp h500e - No
Operating System netapp h500s_firmware - Yes
Hardware netapp h500s - No
Operating System netapp h700s_firmware - Yes
Hardware netapp h700s - No
Operating System netapp h700e_firmware - Yes
Hardware netapp h700e - No
Operating System netapp h410s_firmware - Yes
Hardware netapp h410s - No
Application splunk universal_forwarder < 8.2.12 Yes
Application splunk universal_forwarder < 9.0.6 Yes
Application splunk universal_forwarder 9.1.0 Yes
References