CVE-2013-5211
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…
- 5.0MediumCVSS base score
- 97.5%Exploitation in 30 daysEPSS · top 0.1% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 11Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list 10 Metasploit modules and an Exploit-DB entry for it.
Show the exploits11
Metasploit modules10 modules
- NTP Mode 7 PEER_LIST DoS Scanner (Metasploit module) (opens in a new tab)
auxiliary/scanner/ntp/ntp_peer_list_dosRank normaldisclosed 25 Aug 2014
- NTP Mode 7 PEER_LIST_SUM DoS Scanner (Metasploit module) (opens in a new tab)
auxiliary/scanner/ntp/ntp_peer_list_sum_dosRank normaldisclosed 25 Aug 2014
- NTP Mode 6 REQ_NONCE DRDoS Scanner (Metasploit module) (opens in a new tab)
auxiliary/scanner/ntp/ntp_req_nonce_dosRank normaldisclosed 25 Aug 2014
- NTP Mode 7 GET_RESTRICT DRDoS Scanner (Metasploit module) (opens in a new tab)
auxiliary/scanner/ntp/ntp_reslist_dosRank normaldisclosed 25 Aug 2014
- NTP Mode 6 UNSETTRAP DRDoS Scanner (Metasploit module) (opens in a new tab)
auxiliary/scanner/ntp/ntp_unsettrap_dosRank normaldisclosed 25 Aug 2014
- NTP Monitor List Scanner (Metasploit module) (opens in a new tab)
auxiliary/scanner/ntp/ntp_monlistRank normal
- NTP Clock Variables Disclosure (Metasploit module) (opens in a new tab)
auxiliary/scanner/ntp/ntp_readvarRank normal
- Portmapper Amplification Scanner (Metasploit module) (opens in a new tab)
auxiliary/scanner/portmap/portmap_ampRank normal
- UDP Amplification Scanner (Metasploit module) (opens in a new tab)
auxiliary/scanner/udp/udp_amplificationRank normal
- SSDP ssdp:all M-SEARCH Amplification Scanner (Metasploit module) (opens in a new tab)
auxiliary/scanner/upnp/ssdp_ampRank normal
Exploit-DB1 entry
- NTP ntpd monlist Query Reflection - Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 33073dos, linuxpublished 28 Apr 2014Not verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 5 months later
· 5 months later
Published
- 11 years later
· 11 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 97.5% · top 0.1% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Affected products
n/a
- affected n/a
References
References21
- 59288 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04790232 (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2014:1149 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- HPSBUX02960 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
- TA14-013A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- 64692 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- VU#348126 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- HPSBOV03505 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
- [oss-security] 20131230 CVE to the ntp monlist DDoS issue? (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 59726 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 1030433 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-dev/ntp-dev-4.2.7p26.tar.gz (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://ics-cert.us-cert.gov/advisories/ICSA-14-051-04 (opens in a new tab)x_refsource_MISCx_transferred
- http://aix.software.ibm.com/aix/efixes/security/ntp_advisory.asc (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095861 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [pool] 20111210 Odd surge in traffic today (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20131230 Re: CVE to the ntp monlist DDoS issue? (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095892 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://bugs.ntp.org/show_bug.cgi?id=1532 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://puppet.com/security/cve/puppetlabs-ntp-nov-2015-advisory (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2013-5051 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2013-5211)Record last updated .