Novell GroupWise Internet Agent Content-Type Parsing Integer Signedness Remote Code Execution VulnerabilityZDI-10-241: November 8th, 2010
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This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Novell GroupWise. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the gwia.exe module responsible for parsing e-mail messages received by the server. When the code encounters a Content-Type header it proceeds to parse out the numbers within its contents. The process does not properly check for signed integers and if it encounters one, it loops excessively while writing to the stack. This can be abused by a remote attacker to execute arbitrary code under the context of the SYSTEM user.
Vendor ResponseNovell states:
Linux - http://download.novell.com/Download?buildid=04oMMaiI9nI~
NetWare/Windows - http://download.novell.com/Download?buildid=aq06Eoy7rf4~
The GroupWise Internet Agent (GWIA) has a vulnerability in the way that it parses numbers within the "Content-Type" header of a received message, which could potentially allow an unauthenticated remote attacker to execute arbitrary code on vulnerable installations of GWIA.
Affected versions: GroupWise 8.0x, 8.01x, 8.02. Previous versions of GroupWise are likely also vulnerable but are no longer supported. Customers on earlier versions of GroupWise should, at a minimum, upgrade their GWIAs and associated Domains to version 8.02HP in order to secure their system.
This vulnerability was discovered and reported by Anonymous working with TippingPoint's Zero Day Initiative (http://www.zerodayinitiative.com), ZDI-CAN-953
Novell bug 642338, CVE number pending
Related TID: http://www.novell.com/support/search.do?usemicrosite=true&searchString=7007154
2010-09-24 - Vulnerability reported to vendor
2010-11-08 - Coordinated public release of advisory
CreditThis vulnerability was discovered by: