CVE-2017-6463
ntp: Authenticated DoS via Malicious Config Option
Severity Score
6.5
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows remote authenticated users to cause a denial of service (daemon crash) via an invalid setting in a :config directive, related to the unpeer option.
NTP en versiones anteriores a 4.2.8p10 y 4.3.x en versiones anteriores a 4.3.94 permite a usuarios remotos autenticados provocar una denegación de servicio (caída del demonio) a través de una configuración no válida en al directiva :config, relacionado con la opción unpeer.
A vulnerability was discovered in the NTP server's parsing of configuration directives. A remote, authenticated attacker could cause ntpd to crash by sending a crafted message.
A vulnerability was discovered in the NTP server's parsing of configuration directives. A vulnerability was found in NTP, in the parsing of packets from the DPTS Clock. A vulnerability was discovered in the NTP server's parsing of configuration directives. A vulnerability was found in NTP, affecting the origin timestamp check function. A remote, authenticated attacker could cause ntpd to crash by sending a crafted message. A malicious device could send crafted messages, causing ntpd to crash. An attacker able to spoof messages from all of the configured peers could send crafted packets to ntpd, causing later replies from those peers to be discarded, resulting in denial of service.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2017-03-03 CVE Reserved
- 2017-03-27 CVE Published
- 2024-08-05 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
- CWE-476: NULL Pointer Dereference
CAPEC
References (12)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/97049 | Third Party Advisory | |
| http://www.securitytracker.com/id/1038123 | Third Party Advisory | |
| https://support.apple.com/HT208144 | X_refsource_confirm |
|
| https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us | X_refsource_confirm |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://support.ntp.org/bin/view/Main/NtpBug3387 | 2019-01-24 | |
| http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu | 2019-01-24 | |
| https://access.redhat.com/errata/RHSA-2017:3071 | 2019-01-24 | |
| https://access.redhat.com/errata/RHSA-2018:0855 | 2019-01-24 | |
| https://security.FreeBSD.org/advisories/FreeBSD-SA-17:03.ntp.asc | 2019-01-24 | |
| https://usn.ubuntu.com/3707-2 | 2019-01-24 | |
| https://access.redhat.com/security/cve/CVE-2017-6463 | 2018-04-10 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1434002 | 2018-04-10 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.2.8 Search vendor "Ntp" for product "Ntp" and version "4.2.8" | p9 |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.0 Search vendor "Ntp" for product "Ntp" and version "4.3.0" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.1 Search vendor "Ntp" for product "Ntp" and version "4.3.1" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.2 Search vendor "Ntp" for product "Ntp" and version "4.3.2" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.3 Search vendor "Ntp" for product "Ntp" and version "4.3.3" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.4 Search vendor "Ntp" for product "Ntp" and version "4.3.4" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.5 Search vendor "Ntp" for product "Ntp" and version "4.3.5" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.6 Search vendor "Ntp" for product "Ntp" and version "4.3.6" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.7 Search vendor "Ntp" for product "Ntp" and version "4.3.7" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.8 Search vendor "Ntp" for product "Ntp" and version "4.3.8" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.9 Search vendor "Ntp" for product "Ntp" and version "4.3.9" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.10 Search vendor "Ntp" for product "Ntp" and version "4.3.10" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.11 Search vendor "Ntp" for product "Ntp" and version "4.3.11" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.12 Search vendor "Ntp" for product "Ntp" and version "4.3.12" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.13 Search vendor "Ntp" for product "Ntp" and version "4.3.13" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.14 Search vendor "Ntp" for product "Ntp" and version "4.3.14" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.15 Search vendor "Ntp" for product "Ntp" and version "4.3.15" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.16 Search vendor "Ntp" for product "Ntp" and version "4.3.16" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.17 Search vendor "Ntp" for product "Ntp" and version "4.3.17" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.18 Search vendor "Ntp" for product "Ntp" and version "4.3.18" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.19 Search vendor "Ntp" for product "Ntp" and version "4.3.19" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.20 Search vendor "Ntp" for product "Ntp" and version "4.3.20" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.21 Search vendor "Ntp" for product "Ntp" and version "4.3.21" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.22 Search vendor "Ntp" for product "Ntp" and version "4.3.22" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.23 Search vendor "Ntp" for product "Ntp" and version "4.3.23" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.24 Search vendor "Ntp" for product "Ntp" and version "4.3.24" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.25 Search vendor "Ntp" for product "Ntp" and version "4.3.25" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.26 Search vendor "Ntp" for product "Ntp" and version "4.3.26" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.27 Search vendor "Ntp" for product "Ntp" and version "4.3.27" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.28 Search vendor "Ntp" for product "Ntp" and version "4.3.28" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.29 Search vendor "Ntp" for product "Ntp" and version "4.3.29" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.30 Search vendor "Ntp" for product "Ntp" and version "4.3.30" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.31 Search vendor "Ntp" for product "Ntp" and version "4.3.31" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.32 Search vendor "Ntp" for product "Ntp" and version "4.3.32" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.33 Search vendor "Ntp" for product "Ntp" and version "4.3.33" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.34 Search vendor "Ntp" for product "Ntp" and version "4.3.34" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.35 Search vendor "Ntp" for product "Ntp" and version "4.3.35" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.36 Search vendor "Ntp" for product "Ntp" and version "4.3.36" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.37 Search vendor "Ntp" for product "Ntp" and version "4.3.37" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.38 Search vendor "Ntp" for product "Ntp" and version "4.3.38" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.39 Search vendor "Ntp" for product "Ntp" and version "4.3.39" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.40 Search vendor "Ntp" for product "Ntp" and version "4.3.40" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.41 Search vendor "Ntp" for product "Ntp" and version "4.3.41" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.42 Search vendor "Ntp" for product "Ntp" and version "4.3.42" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.43 Search vendor "Ntp" for product "Ntp" and version "4.3.43" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.44 Search vendor "Ntp" for product "Ntp" and version "4.3.44" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.45 Search vendor "Ntp" for product "Ntp" and version "4.3.45" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.46 Search vendor "Ntp" for product "Ntp" and version "4.3.46" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.47 Search vendor "Ntp" for product "Ntp" and version "4.3.47" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.48 Search vendor "Ntp" for product "Ntp" and version "4.3.48" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.49 Search vendor "Ntp" for product "Ntp" and version "4.3.49" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.50 Search vendor "Ntp" for product "Ntp" and version "4.3.50" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.51 Search vendor "Ntp" for product "Ntp" and version "4.3.51" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.52 Search vendor "Ntp" for product "Ntp" and version "4.3.52" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.53 Search vendor "Ntp" for product "Ntp" and version "4.3.53" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.54 Search vendor "Ntp" for product "Ntp" and version "4.3.54" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.55 Search vendor "Ntp" for product "Ntp" and version "4.3.55" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.56 Search vendor "Ntp" for product "Ntp" and version "4.3.56" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.57 Search vendor "Ntp" for product "Ntp" and version "4.3.57" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.58 Search vendor "Ntp" for product "Ntp" and version "4.3.58" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.59 Search vendor "Ntp" for product "Ntp" and version "4.3.59" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.60 Search vendor "Ntp" for product "Ntp" and version "4.3.60" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.61 Search vendor "Ntp" for product "Ntp" and version "4.3.61" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.62 Search vendor "Ntp" for product "Ntp" and version "4.3.62" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.63 Search vendor "Ntp" for product "Ntp" and version "4.3.63" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.64 Search vendor "Ntp" for product "Ntp" and version "4.3.64" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.65 Search vendor "Ntp" for product "Ntp" and version "4.3.65" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.66 Search vendor "Ntp" for product "Ntp" and version "4.3.66" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.67 Search vendor "Ntp" for product "Ntp" and version "4.3.67" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.68 Search vendor "Ntp" for product "Ntp" and version "4.3.68" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.69 Search vendor "Ntp" for product "Ntp" and version "4.3.69" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.70 Search vendor "Ntp" for product "Ntp" and version "4.3.70" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.71 Search vendor "Ntp" for product "Ntp" and version "4.3.71" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.72 Search vendor "Ntp" for product "Ntp" and version "4.3.72" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.73 Search vendor "Ntp" for product "Ntp" and version "4.3.73" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.74 Search vendor "Ntp" for product "Ntp" and version "4.3.74" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.75 Search vendor "Ntp" for product "Ntp" and version "4.3.75" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.76 Search vendor "Ntp" for product "Ntp" and version "4.3.76" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.77 Search vendor "Ntp" for product "Ntp" and version "4.3.77" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.78 Search vendor "Ntp" for product "Ntp" and version "4.3.78" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.79 Search vendor "Ntp" for product "Ntp" and version "4.3.79" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.80 Search vendor "Ntp" for product "Ntp" and version "4.3.80" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.81 Search vendor "Ntp" for product "Ntp" and version "4.3.81" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.82 Search vendor "Ntp" for product "Ntp" and version "4.3.82" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.83 Search vendor "Ntp" for product "Ntp" and version "4.3.83" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.84 Search vendor "Ntp" for product "Ntp" and version "4.3.84" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.85 Search vendor "Ntp" for product "Ntp" and version "4.3.85" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.86 Search vendor "Ntp" for product "Ntp" and version "4.3.86" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.87 Search vendor "Ntp" for product "Ntp" and version "4.3.87" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.88 Search vendor "Ntp" for product "Ntp" and version "4.3.88" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.89 Search vendor "Ntp" for product "Ntp" and version "4.3.89" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.90 Search vendor "Ntp" for product "Ntp" and version "4.3.90" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.91 Search vendor "Ntp" for product "Ntp" and version "4.3.91" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.92 Search vendor "Ntp" for product "Ntp" and version "4.3.92" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | 4.3.93 Search vendor "Ntp" for product "Ntp" and version "4.3.93" | - |
Affected
| ||||||