Elastic · Packetbeat · CVE-2017-11480
**Name of the Vulnerable Software and Affected Versions**
Packetbeat versions prior to 5.6.4
Packetbeat version 6.0.0
**Description**
The issue is a denial of service flaw in the PostgreSQL protocol handler. If Packetbeat is listening for PostgreSQL traffic and a user is able to send arbitrary network traffic to the monitored port, the attacker could prevent Packetbeat from properly logging other PostgreSQL traffic. A local attacker can cause a panic due to an out of bounds read if they are able to send arbitrary traffic to a monitored port.
**Recommendations**
For Packetbeat versions prior to 5.6.4, update to version 5.6.4 or later to resolve the issue.
For Packetbeat version 6.0.0, update to a version later than 6.0.0 to resolve the issue.
As a temporary workaround, consider restricting access to the monitored port to minimize the risk of exploitation.