Vulnerability Monitor

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CVE-2021-22945


When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it *again*.


Published

2021-09-23T13:15:08.690

Last Modified

2025-06-09T15:15:25.540

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.1 (CRITICAL)

CVSSv2 Vector

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

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

8.6

Impact Score

4.9

Weaknesses
  • Type: Secondary
    CWE-415
  • Type: Primary
    CWE-415
  • Type: Secondary
    CWE-415

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application haxx libcurl ≤ 7.78.0 Yes
Operating System fedoraproject fedora 33 Yes
Operating System fedoraproject fedora 35 Yes
Application netapp cloud_backup - Yes
Application netapp clustered_data_ontap - Yes
Application oracle mysql_server ≤ 5.7.35 Yes
Application oracle mysql_server ≤ 8.0.26 Yes
Operating System netapp h300s_firmware - Yes
Hardware netapp h300s - No
Operating System netapp h500s_firmware - Yes
Hardware netapp h500s - No
Operating System netapp h700s_firmware - Yes
Hardware netapp h700s - No
Operating System netapp h300e_firmware - Yes
Hardware netapp h300e - No
Operating System netapp h500e_firmware - Yes
Hardware netapp h500e - No
Operating System netapp h700e_firmware - Yes
Hardware netapp h700e - No
Operating System netapp h410s_firmware - Yes
Hardware netapp h410s - No
Operating System netapp solidfire_baseboard_management_controller_firmware - Yes
Hardware netapp solidfire_baseboard_management_controller - No
Operating System apple macos < 12.3 Yes
Application siemens sinec_ins < 1.0.1.1 Yes
Operating System debian debian_linux 11.0 Yes
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