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CVE-2007-2171

Status Candidate

Overview

Stack-based buffer overflow in the base64_decode function in GWINTER.exe in Novell GroupWise (GW) WebAccess before 7.0 SP2 allows remote attackers to execute arbitrary code via long base64 content in an HTTP Basic Authentication request.

Related Files

Zero Day Initiative Advisory 07-015
Posted Apr 19, 2007
Authored by Tipping Point | Site zerodayinitiative.com

A vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Novell Groupwise WebAccess. Authentication is not required to exploit this vulnerability. The specific flaw exists in the GWINTER.exe process bound by default on TCP ports 7205 and 7211. During the handling of an HTTP Basic authentication request, the process copies user-supplied base64 data into a fixed length stack buffer. Sending at least 336 bytes will trigger a stack based buffer overflow due to a vulnerable base64_decode() call. Exploitation of this issue can result in arbitrary code execution.

tags | advisory, remote, web, overflow, arbitrary, tcp, code execution
advisories | CVE-2007-2171
MD5 | 4e3ce67379b834263e2437fa61773ffb
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