Biuletyn CIAC G-29

Autor: Romuald Zylla, Lodz Tech.Univ. Poland (zylla_at_lodz1.p.lodz.pl)
Data: Wed 10 Jul 1996 - 19:44:02 MET DST


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                       The U.S. Department of Energy
                    Computer Incident Advisory Capability
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                             INFORMATION BULLETIN

                           dip Program Vulnerability

July 9, 1996 17:00 GMT Number G-29
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PROBLEM: A vulnerability in the dip program makes it possible to
               overflow an internal buffer whose value is under the control of
               the user of the dip program. The dip program manages the
               connections needed for dial-up links such as SLIP and PPP.
PLATFORM: Linux systems for X86 hardware.
DAMAGE: On systems that have dip installed as set-user-id root, anyone
               with access to an account on that system can gain root access.
SOLUTION: Disable the present installed version and install the new
               version of dip.
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VULNERABILITY Exploitation scripts for dip have been found running on Linux
ASSESSMENT: systems for X86 hardware. However, exploitation scripts for
               other architectures and operating systems have not been found,
               but could be easily developed.
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