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Check: GEN003600

AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE: GEN003600 (in versions v1 r14 through v1 r10)

Title

The system must not forward IPv4 source-routed packets. (Cat II impact)

Discussion

Source-routed packets allow the source of the packet to suggest routers forward the packet along a different path than configured on the router, which can be used to bypass network security measures. This requirement applies only to the forwarding of source-routed traffic, such as when IPv4 forwarding is enabled and the system is functioning as a router.

Check Content

# /usr/sbin/no -o ipsrcrouteforward If the returned value is not 0, this is a finding.

Fix Text

# /usr/sbin/no -po "ipsrcrouteforward=0"

Additional Identifiers

Rule ID: SV-38948r1_rule

Vulnerability ID: V-12002

Group Title: GEN003600

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-001551	The organization defines approved authorizations for controlling the flow of information between interconnected systems.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
AC-4	Information Flow Enforcement