CVE-2007-3253 in Security Gateway
Summary
by MITRE
Multiple unspecified vulnerabilities in Astaro Security Gateway (ASG) before 7.005 allow remote attackers to cause a denial of service via (1) certain email, which stops the SMTP Proxy during scanning; (2) certain HTTP traffic, which stops or slows down the HTTP proxy during HTTP responses containing virus scanned web pages; and (3) a disconnection during a streaming session.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 08/12/2022
The CVE-2007-3253 vulnerability affects Astaro Security Gateway versions prior to 7.005 and represents a significant denial of service weakness in enterprise network security appliances. This vulnerability manifests through three distinct attack vectors that target core proxy services within the security gateway, potentially disrupting critical network operations and compromising organizational security infrastructure. The affected system operates as a comprehensive security appliance that provides firewall, intrusion prevention, and proxy services, making it a crucial component in enterprise network defense architectures.
The technical flaw stems from inadequate input validation and error handling within the email scanning and HTTP proxy components of the Astaro Security Gateway. When processing certain malformed email messages, the SMTP proxy service experiences a crash or hang condition that completely stops email scanning capabilities. Similarly, HTTP traffic containing virus-scanned web pages triggers abnormal behavior in the HTTP proxy service, causing either complete service termination or significant performance degradation. The third vector involves streaming session disconnections that lead to service instability. These vulnerabilities fall under the CWE-119 weakness category, which encompasses improper access to memory locations, and represent classic buffer overflow conditions that occur when the system fails to properly validate incoming data streams.
The operational impact of CVE-2007-3253 extends beyond simple service disruption to encompass broader network security implications. Organizations relying on Astaro Security Gateway for email filtering and web content control face potential exposure to complete communication outages during attack windows. The HTTP proxy denial of service scenario particularly affects web browsing capabilities and can impact business operations significantly, while SMTP proxy failures compromise email communication infrastructure. The vulnerability's remote exploitability means attackers can trigger these conditions without physical access to the network, making it a particularly dangerous weakness in perimeter security solutions. According to ATT&CK framework, this vulnerability maps to T1499.004 (Endpoint Denial of Service) and T1566.001 (Phishing), as it enables both service disruption and potential initial access vectors through email-based attacks.
Mitigation strategies for CVE-2007-3253 should focus on immediate patch deployment to upgrade Astaro Security Gateway to version 7.005 or later, which contains the necessary code fixes for input validation and error handling. Network administrators should also implement additional monitoring and alerting mechanisms to detect unusual proxy behavior patterns that might indicate exploitation attempts. Organizations can deploy network segmentation strategies to limit the impact scope of potential attacks and maintain redundant security infrastructure. The vulnerability highlights the importance of regular security updates and proper input validation in network security appliances, aligning with industry best practices established in standards such as NIST SP 800-128 and ISO 27001 for information security management. Additionally, implementing intrusion detection systems and maintaining detailed audit logs can help identify exploitation attempts and provide forensic evidence for security incident response activities.