CVE-2013-5211
Summary
| CVE | CVE-2013-5211 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2014-01-02 14:59:03 UTC |
| Updated | 2026-04-29 01:13:23 UTC |
| Description | The monlist feature in ntp_request.c in ntpd in NTP before 4.2.7p26 allows remote attackers to cause a denial of service (traffic amplification) via forged (1) REQ_MON_GETLIST or (2) REQ_MON_GETLIST_1 requests, as exploited in the wild in December 2013. |
Risk And Classification
Primary CVSS: v2.0 5 from [email protected]
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS: 0.921360000 probability, percentile 0.997170000 (date 2026-04-30)
Problem Types: CWE-20 | n/a
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
PartialAV:N/AC:L/Au:N/C:N/I:N/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Ntp | Ntp | All | All | All | All |
| Application | Ntp | Ntp | 4.2.7 | - | All | All |
| Application | Ntp | Ntp | 4.2.7 | p0 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p1 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p10 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p11 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p12 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p13 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p14 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p15 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p16 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p17 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p18 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p19 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p2 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p20 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p21 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p22 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p23 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p24 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p25 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p3 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p4 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p5 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p6 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p7 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p8 | All | All |
| Application | Ntp | Ntp | 4.2.7 | p9 | All | All |
| Operating System | Opensuse | Opensuse | 11.4 | All | All | All |
| Operating System | Oracle | Linux | 6 | - | All | All |
| Operating System | Oracle | Linux | 7 | - | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [Pool] Odd surge in traffic today | af854a3a-2127-422b-91ae-364da2661108 | lists.ntp.org | Broken Link |
| IBM AIX ntpd Query Function Lets Remote Users Conduct Amplified Denial of Service Attacks - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | Third Party Advisory, VDB Entry |
| oss-security - CVE to the ntp monlist DDoS issue? | af854a3a-2127-422b-91ae-364da2661108 | openwall.com | Mailing List |
| aix.software.ibm.com/aix/efixes/security/ntp_advisory.asc | af854a3a-2127-422b-91ae-364da2661108 | aix.software.ibm.com | Third Party Advisory |
| NTP Amplification Attacks Using CVE-2013-5211 | US-CERT | af854a3a-2127-422b-91ae-364da2661108 | www.us-cert.gov | Third Party Advisory, US Government Resource |
| IBM Support | af854a3a-2127-422b-91ae-364da2661108 | www-947.ibm.com | Broken Link |
| Vulnerability Note VU#348126 - NTP can be abused to amplify denial-of-service attack traffic | af854a3a-2127-422b-91ae-364da2661108 | www.kb.cert.org | Third Party Advisory, US Government Resource |
| www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-dev/ntp-dev-4.2.7p26.tar.gz | af854a3a-2127-422b-91ae-364da2661108 | www.eecis.udel.edu | Patch |
| Oracle Linux Bulletin - July 2016 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Third Party Advisory |
| '[security bulletin] HPSBUX02960 SSRT101419 rev.1 - HP-UX Running NTP, Remote Denial of Service (DoS)' - MARC | af854a3a-2127-422b-91ae-364da2661108 | marc.info | Mailing List |
| NTP 'ntp_request.c' Remote Denial of Service Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Broken Link, Third Party Advisory, VDB Entry |
| Advisory: puppetlabs-ntp default configuration does not fully mitigate CVE-2013-5211 | Puppet | af854a3a-2127-422b-91ae-364da2661108 | puppet.com | Broken Link |
| oss-security - Re: CVE to the ntp monlist DDoS issue? | af854a3a-2127-422b-91ae-364da2661108 | openwall.com | Mailing List |
| openSUSE-SU-2014:1149-1: moderate: Avoid ntp being used as a DDoS amplif | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Third Party Advisory |
| '[security bulletin] HPSBOV03505 rev.1 - TCP/IP Services for OpenVMS running NTP, Remote Code Executi' - MARC | af854a3a-2127-422b-91ae-364da2661108 | marc.info | Mailing List, Third Party Advisory |
| IBM Support | af854a3a-2127-422b-91ae-364da2661108 | www-947.ibm.com | Broken Link |
| Bug 1532 – remove ntpd support for ntpdc's monlist (use ntpq's mrulist) | af854a3a-2127-422b-91ae-364da2661108 | bugs.ntp.org | Issue Tracking |
| HPE Support document - HPE Support Center | af854a3a-2127-422b-91ae-364da2661108 | h20564.www2.hpe.com | Third Party Advisory |
| Security Advisory SA59726 - IBM Flex System Manager Node (FSM) NTP Mode 7 Denial of Service Vulnerability - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Not Applicable |
| About Secunia Research | Flexera | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Not Applicable |
| NTP Reflection Attack | ICS-CERT | af854a3a-2127-422b-91ae-364da2661108 | ics-cert.us-cert.gov | Third Party Advisory, US Government Resource |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.