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XCCDF
Web Server Security Requirements Guide
SRG-APP-000224
The web server must generate a session ID using as much of the character set as possible to reduce the risk of brute force.
The web server must generate a session ID using as much of the character set as possible to reduce the risk of brute force.
An XCCDF Rule
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The web server must generate a session ID using as much of the character set as possible to reduce the risk of brute force.
Medium Severity
<VulnDiscussion>Generating a session identifier (ID) that is not easily guessed through brute force is essential to deter several types of session attacks. By knowing the session ID, an attacker can hijack a user session that has already been user-authenticated by the hosted application. The attacker does not need to guess user identifiers and passwords or have a secure token since the user session has already been authenticated. By generating session IDs that contain as much of the character set as possible, i.e., A-Z, a-z, and 0-9, the session ID becomes exponentially harder to guess.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>