CVE-2015-7974
ntp: missing key check allows impersonation between authenticated peers (VU#357792)
Severity Score
7.7
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."
NTP 4.x en versiones anteriores a 4.2.8p6 y 4.3.x en versiones anteriores a 4.3.90 no verifica las asociaciones del par de las claves simétricas cuando autentica paquetes, lo que podría permitir a atacante remotos llevar a cabo ataques de suplantación de identidad a través de una clave de confianza arbitraria, también conocida como "skeleton key".
A flaw was found in the way NTP verified trusted keys during symmetric key authentication. An authenticated client (A) could use this flaw to modify a packet sent between a server (B) and a client (C) using a key that is different from the one known to the client (A).
*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
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2015-10-23 CVE Reserved
- 2016-01-26 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-06 CVE Updated
- 2024-08-06 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-287: Improper Authentication
- CWE-304: Missing Critical Step in Authentication
CAPEC
References (16)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/81960 | Third Party Advisory | |
| http://www.securitytracker.com/id/1034782 | Third Party Advisory | |
| https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf | Third Party Advisory |
|
| https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us | Third Party Advisory | |
| https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us | Third Party Advisory | |
| https://security.netapp.com/advisory/ntap-20171031-0001 | Third Party Advisory |
|
| https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 | Third Party Advisory |
| URL | Date | SRC |
|---|---|---|
| http://www.talosintel.com/reports/TALOS-2016-0071 | 2024-08-06 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://bugs.ntp.org/show_bug.cgi?id=2936 | 2021-04-26 | |
| http://rhn.redhat.com/errata/RHSA-2016-2583.html | 2021-04-26 | |
| http://support.ntp.org/bin/view/Main/NtpBug2936 | 2021-04-26 | |
| http://www.debian.org/security/2016/dsa-3629 | 2021-04-26 | |
| https://security.FreeBSD.org/advisories/FreeBSD-SA-16:09.ntp.asc | 2021-04-26 | |
| https://security.gentoo.org/glsa/201607-15 | 2021-04-26 | |
| https://access.redhat.com/security/cve/CVE-2015-7974 | 2016-11-03 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1297471 | 2016-11-03 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Siemens Search vendor "Siemens" | Tim 4r-ie Firmware Search vendor "Siemens" for product "Tim 4r-ie Firmware" | * | - |
Affected
| in | Siemens Search vendor "Siemens" | Tim 4r-ie Search vendor "Siemens" for product "Tim 4r-ie" | - | - |
Safe
|
| Siemens Search vendor "Siemens" | Tim 4r-ie Dnp3 Firmware Search vendor "Siemens" for product "Tim 4r-ie Dnp3 Firmware" | * | - |
Affected
| in | Siemens Search vendor "Siemens" | Tim 4r-ie Dnp3 Search vendor "Siemens" for product "Tim 4r-ie Dnp3" | - | - |
Safe
|
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | >= 4.2.0 < 4.2.8 Search vendor "Ntp" for product "Ntp" and version " >= 4.2.0 < 4.2.8" | - |
Affected
| ||||||
| Ntp Search vendor "Ntp" | Ntp Search vendor "Ntp" for product "Ntp" | >= 4.3.0 < 4.3.90 Search vendor "Ntp" for product "Ntp" and version " >= 4.3.0 < 4.3.90" | - |
Affected
| ||||||
| 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" | - |
Affected
| ||||||
| 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" | p1 |
Affected
| ||||||
| 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" | p1-beta1 |
Affected
| ||||||
| 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" | p1-beta2 |
Affected
| ||||||
| 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" | p1-beta3 |
Affected
| ||||||
| 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" | p1-beta4 |
Affected
| ||||||
| 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" | p1-beta5 |
Affected
| ||||||
| 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" | p1-rc1 |
Affected
| ||||||
| 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" | p1-rc2 |
Affected
| ||||||
| 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" | p2 |
Affected
| ||||||
| 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" | p2-rc1 |
Affected
| ||||||
| 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" | p2-rc2 |
Affected
| ||||||
| 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" | p2-rc3 |
Affected
| ||||||
| 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" | p3 |
Affected
| ||||||
| 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" | p3-rc1 |
Affected
| ||||||
| 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" | p3-rc2 |
Affected
| ||||||
| 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" | p3-rc3 |
Affected
| ||||||
| 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" | p4 |
Affected
| ||||||
| 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" | p5 |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Clustered Data Ontap Search vendor "Netapp" for product "Clustered Data Ontap" | - | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Oncommand Balance Search vendor "Netapp" for product "Oncommand Balance" | - | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||