Operating System:

[Win]

Published:

12 December 2008

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                          ESB-2008.1097 -- [Win]
Multiple vulnerabilities identified in Trillian versions prior to 3.1.12.0
                             12 December 2008

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              Trillian
Publisher:            ZDI
Operating System:     Windows
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-5401 CVE-2008-5402 CVE-2008-5403

Original Bulletin:    http://www.zerodayinitiative.com/advisories/ZDI-08-077
                      http://www.zerodayinitiative.com/advisories/ZDI-08-078
                      http://www.zerodayinitiative.com/advisories/ZDI-08-079

Comment: This ESB contains three advisories regarding Trillian
         vulnerabilities.

Revision History:     December 12 2008: Added CVEs
                      December  8 2008: Initial Release

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ZDI-08-077: Trillian AIM IMG Tag Parsing Stack Overflow Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-077
December 4, 2008

- -- Affected Vendors:
Cerulean Studios

- -- Affected Products:
Cerulean Studios Trillian

- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Cerulean Studios Trillian. Authentication is
not required to exploit this vulnerability.

The specific flaw exists within the tooltip processing code for
Trillian. When creating a tooltip for an image, the application
generates an XML tag including a property containing the filename. This
data is then copied directly into a stack-based buffer without any
length verifications which can eventually lead to code execution with
the privileges of the client.

- -- Vendor Response:
Cerulean Studios has issued an update to correct this vulnerability. More
details can be found at:

http://blog.ceruleanstudios.com/?p=404

- -- Disclosure Timeline:
2008-11-10 - Vulnerability reported to vendor
2008-12-04 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:
    * Damian Put

ZDI-08-078: Trillian IMG SRC ID Memory Corruption Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-078
December 4, 2008

- -- Affected Vendors:
Cerulean Studios

- -- Affected Products:
Cerulean Studios Trillian

- -- Vulnerability Details:
This vulnerability allows remote attackers to potentially execute
arbitrary code on vulnerable installations of Cerulean Studios Trillian.
Authentication is not required to exploit this vulnerability.

The specific flaw exists within the XML processing code for Trillian.
When parsing specially formulated xml, the application will corrupt an
internal data structure. Whilst deallocating this data structure, the
application can be tricked into freeing a single allocated chunk
multiple times, which can potentially lead to code execution.

- -- Vendor Response:
Trillian has issued an update to correct this vulnerability. More
details can be found at:

http://blog.ceruleanstudios.com/?p=404

- -- Disclosure Timeline:
2008-11-10 - Vulnerability reported to vendor
2008-12-04 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:
    * Damian Put

ZDI-08-079: Trillian AIM Plugin Malformed XML Tag Heap Overflow 
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-079
December 4, 2008

- -- Affected Vendors:
Cerulean Studios

- -- Affected Products:
Cerulean Studios Trillian

- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Cerulean Studios Trillian. Authentication is
not required to exploit this vulnerability.

The specific flaw exists within the XML processing code for Trillian.
When parsing a malformed XML tag, the application does not allocate
enough space for it's contents. During copying of this to the newly
allocated buffer, the application will overwrite heap structures with
attacker-supplied data that can then be leveraged to achieve code
execution with the privileges of the application.

- -- Vendor Response:
Cerulean Studios has issued an update to correct this vulnerability. More
details can be found at:

http://blog.ceruleanstudios.com/?p=404

- -- Disclosure Timeline:
2008-11-24 - Vulnerability reported to vendor
2008-12-04 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:
    * Damian Put

- -- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents 
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

    http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

    http://www.zerodayinitiative.com/advisories/disclosure_policy/

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