Alpine Linux: CVE-2022-43552: Use After Free

Alpine Linux: CVE-2022-43552: Use After Free

Severity

7

CVSS

(AV:N/AC:M/Au:N/C:N/I:N/A:C)

Published

02/09/2023

Created

08/23/2024

Added

08/22/2024

Modified

10/02/2024

Description

A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.

Solution(s)

• alpine-linux-upgrade-curl

References

• https://attackerkb.com/topics/cve-2022-43552
• CVE - 2022-43552
• https://security.alpinelinux.org/vuln/CVE-2022-43552