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Vulnerability of cURL: use after free via TLS Session Caching

Synthesis of the vulnerability 

An attacker can force the usage of a freed memory area via TLS Session Caching of cURL, in order to trigger a denial of service, and possibly to run code.
Vulnerable systems: cURL, Fedora, Shibboleth SP, Slackware.
Severity of this threat: 3/4.
Creation date: 26/05/2021.
Références of this weakness: CVE-2021-22901, FEDORA-2021-eb5b7c53a9, SSA:2021-146-01, VIGILANCE-VUL-35540.

Description of the vulnerability 

An attacker can force the usage of a freed memory area via TLS Session Caching o...
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This computer threat impacts software or systems such as cURL, Fedora, Shibboleth SP, Slackware.

Our Vigil@nce team determined that the severity of this computer vulnerability alert is important.

The trust level is of type confirmed by the editor, with an origin of internet server.

An attacker with a expert ability can exploit this cybersecurity weakness.

Solutions for this threat 

This vulnerability workaround will be public soon.
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