SUSE Linux Enterprise Security Rating Overview
The SUSE Security Team uses industry standard rating systems for security vulnerabilities.
The simplified rating is used by various software companies to allow administrators a quick decision on whether to apply updates and at what schedule. We publish our Update Notices labeled with this rating.
This rating is given to flaws that could be easily exploited by a remote unauthenticated attacker and lead to system compromise (arbitrary code execution) without requiring user interaction. These are the types of vulnerabilities that can be exploited by worms. Flaws that require an authenticated remote user, a local user, or an unlikely configuration are not classed as critical impact.
This rating is given to flaws that can easily compromise the confidentiality, integrity, or availability of resources. These are the types of vulnerabilities that allow local users to gain privileges, allow unauthenticated remote users to view resources that should otherwise be protected by authentication, allow authenticated remote users to execute arbitrary code, or allow remote unauthenticated users to cause a denial of service without user interaction.
This rating is given to flaws that may be more difficult to exploit but could still lead to some compromise of the confidentiality, integrity, or availability of resources, under certain circumstances. These are the types of vulnerabilities that could have had a critical impact or important impact but are less easily exploited based on a technical evaluation of the flaw, or affect unlikely configurations. Local, persistent (service needs to be restarted) denial of service conditions for basic system services (kernel, systemd, polkit, dbus, ...) with and without user interaction should also be rated "moderate".
This rating is given to all other issues that have a security impact. These are the types of vulnerabilities that are believed to require unlikely circumstances to be able to be exploited, or where a successful exploit would give minimal consequences.
CVSS v2 rating
Another common industry scoring system is the CVSS v2 base scoring, which converts the various vulnerability types, impacts and preconditions into a unified rating number.
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