SB2018031211 - Red Hat update for dhcp
Published: March 12, 2018
Security Bulletin ID
SB2018031211
Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2018-5732)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in the dhclient due to buffer overflow. A remote attacker can send specially crafted response, trigger memory corruption and cause the service to crash.
2) Memory corruption (CVE-ID: CVE-2018-5733)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in the dhcpd due to improper handling of reference counting when processing client requests. A remote attacker can send large amounts of data to the target server can send a large number of packets, trigger a reference counter overflow and cause the target dhcpd service to consume all available memory and crash.
Remediation
Install update from vendor's website.