ID:27 - Exploit for Denial of service in ntp - CVE-2013-5211
Published: March 18, 2020
Vulnerability identifier: #VU4013
Vulnerability risk: High
CVE-ID: CVE-2013-5211
CWE-ID: CWE-20
Exploitation vector: Remote access
Vulnerable software:
ntp
ntp
Link to public exploit:
Vulnerability description
The vulnerability allows a remote attacker to cause DoS conditions on the target system.
The weakness exists due to an error in the monlist feature in ntp_request.c. By sending a specially crafted REQ_MON_GETLIST or REQ_MON_GETLIST_1 request, a remote attacker can consume available CPU resources and cause the server to crash.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.
Note: the vulnerability was being actively exploited.
The weakness exists due to an error in the monlist feature in ntp_request.c. By sending a specially crafted REQ_MON_GETLIST or REQ_MON_GETLIST_1 request, a remote attacker can consume available CPU resources and cause the server to crash.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.
Note: the vulnerability was being actively exploited.
Remediation
Update to version 4.2.7p26.