CVE-2013-5211
mediumPriorität · beachten · 64EPSS 0.975 · 100. PerzentilExploit · funktionalDEEURUUSEPSS · bewertet 2026-10-26
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.
Behebungen
Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.
Ein Hersteller-Fix ist verfügbar.
- BehobenSIMA² Master Stationauma_psirt
Upgrade your SIMA2 to software version 2.6 or above. The NTP service of the SIMA2 Master Station with software version V2.6 and above includes a current, supported version of ntpd.
- MitigationSIMA² Master Stationauma_psirt
1. If your SIMA2 does not need to provide time information to other systems or synchronize itself with an NTP server, disable the NTP client on those systems. Please note that the NTP client is disabled by default in SIMA2 2. In case you must use the NTP server on an SIMA2, choose from the following options to reduce NTP-based risks: - Allow NTP traffic to/from trusted NTP clients only - Monitor the network for malicious NTP traffic going to/coming from the SIMA2 - Filter malicious NTP traffic going to/coming from the SIMA2 Monitor NTP server operations on your SIMA2 (server availability, correctness of advertised time, NTP-related log entries, etc.) 3. In case you must use the NTP client on an SIMA2, choose from the following options to reduce NTP-based risks: - Use trusted NTP servers only - Allow NTP traffic to/from trusted NTP servers only - Monitor the network for malicious NTP traffic targeting the SIMA2 - Filter malicious NTP traffic targeting the SIMA2 - Monitor NTP client operations on your SIMA2 (correctness of system time, NTP-related log entries, etc.)
- MitigationNTP service NTP (with MONLIST support)cisa_csaf_ot
NTP can be upgraded to NTP-4.2.7p26 or later that removes MONLIST support and is replaced with the more secure MRUNLIST function.
- MitigationTropOS devices series 1400/2400/6400cisa_csaf_ot
Hitachi Energy has identified the following specific workarounds and mitigations users can apply to reduce risk:
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 4.7–7.8
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
Exploits (16)
Öffentlicher Proof-of-Concept- und Exploit-Code.
- auxiliary/scanner/ntp/ntp_monlistNTP Monitor List Scannerfunktional · metasploit
- auxiliary/scanner/ntp/ntp_peer_list_dosNTP Mode 7 PEER_LIST DoS Scannerfunktional · metasploit
- auxiliary/scanner/ntp/ntp_peer_list_sum_dosNTP Mode 7 PEER_LIST_SUM DoS Scannerfunktional · metasploit
- auxiliary/scanner/ntp/ntp_readvarNTP Clock Variables Disclosurefunktional · metasploit
- auxiliary/scanner/ntp/ntp_req_nonce_dosNTP Mode 6 REQ_NONCE DRDoS Scannerfunktional · metasploit
- auxiliary/scanner/ntp/ntp_reslist_dosNTP Mode 7 GET_RESTRICT DRDoS Scannerfunktional · metasploit
betroffene Produkte (20)
Betroffene Produkte und Versionsbereiche.
Advisories (3)
Hersteller- und Ökosystem-Meldungen dazu.
- VDE-2022-032AUMA: Multiple Vulnerabilities in Automation Runtime NTP Service2022-08-09csaf · auma_psirtDE
The SIMA2 Master Station features an NTP service based on ntpd, a reference implementation of the Network Time Protocol (NTP). Affected SIMA2 Master Stations with software version < V2.6 include an outdated version of ntpd which is affected by a large number of vulnerabilities
- ICSA-14-051-04NTP Reflection Attack2014-11-23icsa · cisa_csaf_otUS
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov
- ICSA-24-352-02Hitachi Energy TropOS Devices Series 1400/2400/64002024-12-17icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition.
auch bekannt als (6)
Weitere Namen und Kennungen dieser Entität.
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (63)
Externe Belege — Patches, Meldungen, Analysen.
- http://aix.software.ibm.com/aix/efixes/security/ntp_advisory.asccnnvd
- http://bugs.ntp.org/show_bug.cgi?id=1532cnnvd
- http://ics-cert.us-cert.gov/advisories/ICSA-14-051-04cnnvd
- http://lists.ntp.org/pipermail/pool/2011-December/005616.htmlcnnvd
- http://lists.opensuse.org/opensuse-updates/2014-09/msg00031.htmlcnnvd
- http://marc.info/?l=bugtraq&m=138971294629419&w=2cnnvd
- http://marc.info/?l=bugtraq&m=144182594518755&w=2cnnvd
- http://openwall.com/lists/oss-security/2013/12/30/6cnnvd
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