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AUSCERT External Security Bulletin Redistribution
ESB-2010.1022
Novell Groupwise GWPOA HTTP Request Remote Code Execution Vulnerability
10 November 2010
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AusCERT Security Bulletin Summary
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Product: Novell Groupwise
Publisher: Zero Day Initiative
Operating System: Windows
Netware
Linux variants
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution: Patch/Upgrade
Original Bulletin:
http://www.zerodayinitiative.com/advisories/ZDI-10-247/
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Novell Groupwise GWPOA HTTP Request Remote Code Execution Vulnerability
ZDI-10-247: November 9th, 2010
CVSS Score
10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Affected Vendors
Novell
Affected Products
Groupwise
TippingPoint IPS Customer Protection
TippingPoint IPS customers are protected against this vulnerability by Digital
Vaccine protection filter ID 10328. For further product information on the
TippingPoint IPS:
http://www.tippingpoint.com
Vulnerability Details
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 in a function responsible for assembling an HTTP
response. The following modules implement this functionality: gwpoa.exe,
gwmta.exe, gwia.exe. When responding to an HTTP request sent to TCP port 7101
or 7100 or in the case of gwia.exe the user configured "Message Transfer Port",
the process uses the client-specified "Host: " header to create an HTTP 301
redirection message. Within this code a local stack buffer is used to store the
redirect location and can be overflown with a sufficiently long header value.
A remote attacker can exploit this vulnerability to execute arbitrary code
under the context of the SYSTEM user.
Vendor Response
Novell states:
Linux - http://download.novell.com/Download?buildid=04oMMaiI9nI~
NetWare/Windows - http://download.novell.com/Download?buildid=aq06Eoy7rf4~
The HTTP interfaces for the GroupWise agents (Message Transfer Agent, Post
Office Agent, Internet Agent, WebAccess Agent, Monitor Agent) are vulnerable
to an exploit that could allow a remote attacker to execute arbitrary code on
vulnerable installations of Novell Groupwise. Authentication is not required to
exploit this vulnerability.
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 GroupWise systems to version
8.02HP (or disable the GroupWise Agents' HTTP interfaces) 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-770
Novell bug 627942, CVE number pending
Related TID: http://www.novell.com/support/search.do?usemicrosite=true&searchString=7007159
Disclosure Timeline
2010-06-10 - Vulnerability reported to vendor
2010-11-09 - Coordinated public release of advisory
Credit
This vulnerability was discovered by:
Anonymous
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