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<?xml version="1.0" encoding="UTF-8"?>
<glsa id="200311-04">
<title>FreeRADIUS: heap exploit and NULL pointer dereference vulnerability</title>
FreeRADIUS is vulnerable to a heap exploit and a NULL pointer dereference
<product type="ebuild">FreeRADIUS</product>
<revised>2003-11-23: 01</revised>
<package name="net-dialup/freeradius" auto="yes" arch="*">
<unaffected range="ge">0.9.3</unaffected>
<vulnerable range="le">0.9.2</vulnerable>
FreeRADIUS is a popular open source RADIUS server.
FreeRADIUS versions below 0.9.3 are vulnerable to a heap exploit, however,
the attack code must be in the form of a valid RADIUS packet which limits
the possible exploits.
Also corrected in the 0.9.3 release is another vulnerability which causes
the RADIUS server to de-reference a NULL pointer and crash when an
Access-Request packet with a Tunnel-Password is received.
<impact type="normal">
A remote attacker could craft a RADIUS packet which would cause the RADIUS
server to crash, or could possibly overflow the heap resulting in a system
There is no known workaround at this time.
Users are encouraged to perform an 'emerge sync' and upgrade the package to
the latest available version - 0.9.3 is available in portage and is marked
as stable.
# emerge sync
# emerge -pv '&gt;=net-dialup/freeradius-0.9.3'
# emerge '&gt;=net-dialup/freeradius-0.9.3'
# emerge clean</code>
<uri link=""> Security Alert</uri>