A vulnerability in Vision Media Management superagent HTTP client module 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 compressed HTTP server responses that may become larger once uncompressed by the affected software. An attacker could exploit this vulnerability by persuading a user to make a request to an attacker-controlled HTTP server, which could then send to the targeted system a ZIP-compressed response that is designed to become larger once uncompressed. When the response is uncompressed by the affected application, it may consume excessive amounts of CPU and memory resources, resulting in a DoS condition.
Vision Media Management has confirmed the vulnerability and released software updates.
To exploit this vulnerability, an attacker may persuade a targeted user to make a request to an attacker-controlled server by using misleading language and instructions.
The type of attack that exploits this vulnerability is known as a ZIP-bomb attack.
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.
Vision Media Management has released an issue report at the following link: Issue #1259
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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.