Vulnerabilities

A Vulnerability is a state in a computing system (or set of systems) which either (a) allows an attacker to execute commands as another user, (b) allows an attacker to access data that is contrary to the specified access restrictions for that data, (c) allows an attacker to pose as another entity, or (d) allows an attacker to conduct a denial of service.Advisories relating to Symantec products may be viewed here.

Microsoft Internet Explorer CVE-2013-1311 Use-After-Free Remote Code Execution Vulnerability

Risk:
High
Date Discovered:
May 14, 2013
Description:
Microsoft Internet Explorer is prone to a remote code-execution vulnerability. Attackers can exploit this issue by enticing an unsuspecting user to view a specially crafted webpage. Attackers can exploit this issue to execute arbitrary code in the context of the currently logged-in user. Failed attacks will cause denial-of-service conditions. Internet Explorer 8 is vulnerable.
Technologies Affected
  • Avaya Aura Conferencing Standard
  • Avaya CallPilot
  • Avaya Communication Server 1000 Telephony Manager
  • Avaya Meeting Exchange - Client Registration Server
  • Avaya Meeting Exchange - Recording Server
  • Avaya Meeting Exchange - Streaming Server
  • Avaya Meeting Exchange - Web Conferencing Server
  • Avaya Meeting Exchange - Webportal
  • Avaya Messaging Application Server
  • Microsoft Internet Explorer 8
Recommendations
  • Run all software as a nonprivileged user with minimal access rights.
    To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.
  • Deploy network intrusion detection systems to monitor network traffic for malicious activity.
    Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This includes but is not limited to requests that include NOP sleds and unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits
  • Do not follow links provided by unknown or untrusted sources.
    Web users should be cautious about following links to sites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.
  • Implement multiple redundant layers of security.
    Memory-protection schemes (such as nonexecutable stack and heap configurations and randomly mapped memory segments) will complicate exploits of memory-corruption vulnerabilities.
Updates are available. Please see the references or vendor advisory for more information.
References
Credits
Scott Bell of Security-Assessment.com
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