Double Free in Apple Macos
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*.
Vulnerability class: Double Free
EPSS: 0.062 (92.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support@hackerone.com (Exploit, Patch, Third Party Advisory)
- support@hackerone.com (vendor-advisory, Mailing List, Third Party Advisory)
- support@hackerone.com (Patch, Third Party Advisory)
- support@hackerone.com (Third Party Advisory)
- support@hackerone.com (vendor-advisory, Mailing List, Third Party Advisory)
- support@hackerone.com (Patch, Third Party Advisory)
- support@hackerone.com (Third Party Advisory)
- support@hackerone.com (mailing-list, Mailing List, Third Party Advisory)
- support@hackerone.com (vendor-advisory, Third Party Advisory)
- support@hackerone.com (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-22945?
- CVE-2021-22945 is a critical-severity vulnerability in Apple Macos, classified under Double Free. CVSS score: 9.1/10. Published 2021-09-23.
- How severe is CVE-2021-22945?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2021-22945 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.