fw_dbus.py in system-config-firewall 1.2.29 and earlier uses the
pickle Python module unsafely during D-Bus communication between the
GUI and the backend, which might allow local users to gain privileges
via a crafted serialized object.
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MLIST:[oss-security] 20110718 CVE-2011-2520: flaw in system-config-firewall's usage of pickle allows privilege escalation
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