CVE-2008-2408 in Trillian
Summary
by MITRE
Heap-based buffer overflow in the XML parsing functionality in talk.dll in Cerulean Studios Trillian Pro before 3.1.10.0 allows remote attackers to execute arbitrary code via a malformed attribute in an IMG tag.
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Analysis
by VulDB Data Team • 08/10/2019
The vulnerability identified as CVE-2008-2408 represents a critical heap-based buffer overflow within the XML parsing component of Cerulean Studios Trillian Pro messaging application. This flaw exists specifically within the talk.dll module and affects versions prior to 3.1.10.0, creating a significant security risk for users of the instant messaging platform. The vulnerability manifests when the application processes malformed XML content, particularly within IMG tags that contain specially crafted attributes designed to trigger the buffer overflow condition.
The technical implementation of this vulnerability stems from inadequate input validation and memory management within the XML parser functionality. When Trillian Pro encounters an IMG tag with malformed attributes, the parsing routine fails to properly bounds-check memory allocations, leading to a situation where attacker-controlled data can overwrite adjacent memory locations on the heap. This heap corruption enables remote attackers to inject and execute arbitrary code with the privileges of the affected application process. The vulnerability operates under CWE-121, which classifies heap-based buffer overflow conditions, and aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as successful exploitation would allow for code execution within the application context.
The operational impact of this vulnerability extends beyond simple remote code execution, as it provides attackers with a pathway to compromise user systems through social engineering or targeted attacks. Since Trillian Pro is widely used for instant messaging and communication, the attack surface is substantial, particularly in enterprise environments where the application may be used for business communications. Attackers could exploit this vulnerability by crafting malicious IM messages or by compromising websites that embed Trillian-compatible content, making the attack vector particularly insidious as it could be delivered through seemingly benign communication channels.
Mitigation strategies for this vulnerability should prioritize immediate patching of affected Trillian Pro installations to version 3.1.10.0 or later, which contains the necessary memory bounds checking and input validation fixes. Network administrators should also implement monitoring for suspicious XML content in network traffic and consider deploying intrusion detection systems that can identify malformed IMG tag attributes. Additionally, users should be educated about the risks of accepting unsolicited messages from untrusted sources, as this vulnerability could be exploited through phishing or social engineering campaigns. The fix implemented by Cerulean Studios would likely involve strengthening the XML parser's attribute handling routines and implementing proper memory allocation bounds checking to prevent the heap overflow condition from occurring. Organizations should also consider isolating Trillian Pro usage in restricted network environments and implementing application whitelisting policies to prevent execution of unpatched versions.