Use After Free Affecting libcurl package, versions <0:7.87.0-2.amzn2.0.1
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Test your applications- Snyk ID SNYK-AMZN2-LIBCURL-3310645
- published 4 Feb 2023
- disclosed 9 Feb 2023
Introduced: 4 Feb 2023
CVE-2022-43552 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 libcurl to version 0:7.87.0-2.amzn2.0.1 or higher.
This issue was patched in ALAS2-2023-1924.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libcurl package and not the libcurl package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 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.