Double Free in cURL - CVE-2021-22945
Published: September 15, 2021
Vulnerability identifier: #VU56610
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-22945
CWE-ID: CWE-415
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: curl.haxx.se
Affected software:
cURL
cURL
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when sending data to an MQTT server. A remote attacker with ability to control libcurl input can trigger a double free error and perform a denial of service (DoS) attack.
How to mitigate CVE-2021-22945
Install updates from vendor's website.