A vulnerability in the QGifHandler component of Trolltech Qt could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a targeted system.
The vulnerability is due to improper processing of GIF image files by the affected software. An attacker could exploit this vulnerability by persuading a user to access a GIF image file that submits malicious input to the targeted system. A successful exploit could trigger a QImage allocation failure in the QGifHandler component that causes the affected software to crash, resulting in a DoS condition.
Trolltech has confirmed the vulnerability and released software updates.
To exploit this vulnerability, the attacker may use misleading language or instructions to persuade a user to access a GIF image file that submits malicious input to the targeted system.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Users are advised not to open email messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in email messages are safe, they are advised not to open them.
Users are advised not to visit websites or follow links that have suspicious characteristics or cannot be verified as safe.
Administrators are advised to use an unprivileged account when browsing the Internet.
Administrators are advised to monitor critical systems.
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Cisco Multivendor Vulnerability Alerts respond to vulnerabilities identified in third-party vendors' products. These alerts contain information compiled from diverse sources and provide comprehensive technical descriptions, objective analytical assessments, workarounds and practical safeguards, and links to vendor advisories and patches.