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Unchecked Buffer Could Enable DoS Attacks
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#1
10-31-2002
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Unchecked Buffer Could Enable DoS Attacks
Issue:
Windows 2000 & Windows XP natively support Point-to-Point Tunneling Protocol (PPTP), a Virtual Private Networking technology that is implemented as part of Remote Access Services (RAS). PPTP support is an optional component in Windows NT 4.0, Windows 98, Windows 98SE, & Windows ME. A security vulnerability results in the Windows 2000 & Windows XP implementations because of an unchecked buffer in a section of code that processes the control data used to establish, maintain & tear down PPTP connections. By delivering specially malformed PPTP control data to an affected server, an attacker could corrupt kernel memory & cause the system to fail, disrupting any work in progress on the system. Affected Software: Microsoft Windows 2000 Microsoft Windows XP Patch availability: Microsoft Windows 2000 Microsoft Windows XP 32-bit Windows XP 64-bit |
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