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Multiple Vendor C Library realpath() Off-By-One Buffer Overflow Vulnerability

References:

• Apple Security Updates (Apple)
  
• NetBSD Security Advisory 2003-011 (NetBSD)
  
• Sun Alert ID: 56121 (Sun Microsystems)
  
• Sun Linux Support - Sun Linux Patches (Sun)
  
• TLSA-2003-46 wu-ftpd (Turbolinux)
  
• Wu-Ftpd Homepage (Washington University)
  
• wu-ftpd fb_realpath() off-by-one bug (Janusz Niewiadomski )
  
• wu-ftpd-2.6.2 off-by-one remote exploit. ("dong-h0un U" )