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Vulnerability of OpenStack Keystone: privilege escalation via the EC2 API Signature TTL

Synthesis of the vulnerability 

An attacker can bypass restrictions via EC2 API of OpenStack Keystone, in order to escalate his privileges.
Vulnerable software: Debian.
Severity of this announce: 2/4.
Creation date: 07/05/2020.
Références of this computer vulnerability: 1872737, CVE-2020-12692, DSA-4679-1, OSSA-2020-003, VIGILANCE-VUL-32197.

Description of the vulnerability 

An attacker can bypass restrictions via EC2 API of OpenStack Keystone, in order ...
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This computer weakness note impacts software or systems such as Debian.

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

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

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

Solutions for this threat 

Workarounds for this vulnerability are not yet public.
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