Use After Free Affecting curl package, versions <7.87.0-r0
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Test your applications- Snyk ID SNYK-ALPINE317-CURL-3179544
- published 21 Dec 2022
- disclosed 9 Feb 2023
Introduced: 21 Dec 2022
CVE-2022-43552 Open this link in a new tabHow to fix?
Upgrade Alpine:3.17 curl to version 7.87.0-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Alpine.
See How to fix? for Alpine:3.17 relevant fixed versions and status.
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.