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Vulnerability of Python typed_ast: out-of-bounds memory reading via handle_keywordonly_args

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via handle_keywordonly_args of Python typed_ast, in order to trigger a denial of service, or to obtain sensitive information.
Vulnerable software: Fedora.
Severity of this announce: 2/4.
Creation date: 16/03/2020.
Références of this computer vulnerability: CVE-2019-19274, FEDORA-2020-9b3dabc21c, VIGILANCE-VUL-31789.

Description of the vulnerability 

An attacker can force a read at an invalid address via handle_keywordonly_args o...
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This security weakness impacts software or systems such as Fedora.

Our Vigil@nce team determined that the severity of this threat bulletin is medium.

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

An attacker with a expert ability can exploit this threat.

Solutions for this threat 

Solutions for this vulnerability are not yet public.
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