OpenSLP CVE-2019-5544 Heap Memory Corruption Vulnerability



Date Discovered

December 6, 2019


OpenSLP is prone to a heap-memory-corruption vulnerability. An attacker can exploit this issue to crash the affected application or execute arbitrary code within the context of the affected application. OpenSLP 1.2.1 and 2.0.0 are vulnerable; other versions may also be affected.

Technologies Affected

  • OpenSLP OpenSLP 1.2.1
  • OpenSLP OpenSLP 2.0.0
  • VMWare Esxi 6.0
  • VMWare Esxi 6.5
  • VMWare Esxi 6.7
  • VMWare Horizon DaaS 8.0.0


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 may indicate exploit attempts or activity that results from a successful exploit.

Do not follow links provided by unknown or untrusted sources.
To reduce the likelihood of successful exploits, never visit sites of questionable integrity or follow links provided by unfamiliar or untrusted sources.

Implement multiple redundant layers of security.
Various memory-protection schemes (such as nonexecutable and randomly mapped memory segments) may hinder an attacker's ability to exploit memory corruption vulnerabilities.

Updates are available. Please see the references or vendor advisory for more information.



360Vulcan team working with the 2019 Tianfu Cup Pwn Contest

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