CVE-2008-7135 in ICQ Toolbar
Summary
by MITRE
toolbaru.dll in ICQ Toolbar (ICQToolbar) 2.3 allows remote attackers to cause a denial of service (toolbar crash) via a long argument to the IsChecked method, a different vector than CVE-2008-7136.
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Analysis
by VulDB Data Team • 08/20/2021
The vulnerability identified as CVE-2008-7135 affects the ICQ Toolbar version 2.3, specifically targeting the toolbaru.dll component. This issue represents a denial of service condition that can be exploited by remote attackers through manipulation of the IsChecked method parameter. The vulnerability demonstrates characteristics consistent with buffer overflow or input validation flaws that can lead to application instability and crash conditions. The attack vector differs from CVE-2008-7136, indicating this represents a distinct weakness within the toolbar's implementation that requires separate remediation approaches. The affected software component operates as part of the ICQ messaging platform's user interface toolbar functionality, which provides additional features and services to users within the ICQ ecosystem.
The technical flaw manifests when the IsChecked method receives an excessively long argument that exceeds the expected parameter length or buffer capacity. This condition typically occurs when the application fails to properly validate input parameters or implement adequate bounds checking mechanisms. The vulnerability exploits a weakness in the parameter handling logic within toolbaru.dll where insufficient input sanitization allows maliciously crafted arguments to cause memory corruption or stack overflow conditions. The method's implementation appears to lack proper boundary checks that would normally prevent buffer overflows or memory access violations when processing user-supplied data. This type of vulnerability falls under the CWE-121 category of stack-based buffer overflow conditions, where the application's stack memory becomes corrupted due to improper input handling. The flaw represents a classic example of insufficient input validation that can be exploited to disrupt normal application operation.
The operational impact of this vulnerability extends beyond simple denial of service conditions, as it can potentially disrupt user productivity and create security concerns within enterprise environments. When exploited, the vulnerability causes the ICQ toolbar to crash or become unresponsive, requiring users to restart the application or potentially the entire system to restore normal functionality. In corporate settings where ICQ is used for business communications, such instability can lead to significant operational disruptions and may require immediate IT intervention. The remote nature of the attack means that malicious actors can exploit this vulnerability without requiring physical access to target systems, making it particularly concerning for organizations with distributed workforces. The vulnerability can be leveraged in conjunction with other attack vectors to create more complex exploitation scenarios, potentially allowing for privilege escalation or information disclosure depending on the broader system context. This type of vulnerability aligns with ATT&CK technique T1499.004 for network denial of service attacks and represents a common attack pattern in software exploitation frameworks.
Mitigation strategies for CVE-2008-7135 should focus on implementing proper input validation and parameter bounds checking within the affected software components. The most effective immediate solution involves updating to the latest version of ICQ Toolbar where the vulnerability has been patched and properly validated. Organizations should implement network segmentation and access controls to limit exposure of vulnerable systems to untrusted networks. Input sanitization measures should be deployed at network boundaries to filter out potentially malicious arguments before they reach vulnerable applications. System administrators should monitor for unusual network traffic patterns or application crash reports that may indicate exploitation attempts. The vulnerability highlights the importance of maintaining updated software versions and implementing robust security testing procedures. Additionally, implementing application whitelisting controls and restricting user privileges can reduce the potential impact of successful exploitation attempts. Regular security audits and vulnerability assessments should be conducted to identify similar issues within the broader software ecosystem. The remediation process should include comprehensive testing to ensure that the patch does not introduce regressions in functionality while effectively addressing the buffer overflow condition.