high
7.7
CWE
287
Advisory Published
Updated

CVE-2015-7974

First published: Tue Jan 26 2016(Updated: )

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."

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
debian/ntp
1:4.2.8p12+dfsg-4
1:4.2.8p15+dfsg-1
Siemens TIM 4R-IE
Siemens TIM 4R-IE DNP3
NTP>=4.2.0<4.2.8
NTP>=4.3.0<4.3.90
NTP=4.2.8
NTP=4.2.8-p1
NTP=4.2.8-p1-beta1
NTP=4.2.8-p1-beta2
NTP=4.2.8-p1-beta3
NTP=4.2.8-p1-beta4
NTP=4.2.8-p1-beta5
NTP=4.2.8-p1-rc1
NTP=4.2.8-p1-rc2
NTP=4.2.8-p2
NTP=4.2.8-p2-rc1
NTP=4.2.8-p2-rc2
NTP=4.2.8-p2-rc3
NTP=4.2.8-p3
NTP=4.2.8-p3-rc1
NTP=4.2.8-p3-rc2
NTP=4.2.8-p3-rc3
NTP=4.2.8-p4
NTP=4.2.8-p5
Siemens TIM 4R-IE DNP3
siemens SIMATIC TIM 4R-IE
Siemens TIM 4R-IE
Siemens TIM 4R-IE
IBM Data ONTAP
NetApp OnCommand Balance
Debian Linux=8.0
Debian Linux=9.0

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2015-7974?

    CVE-2015-7974 is classified as a medium severity vulnerability due to the risk of impersonation attacks.

  • How do I fix CVE-2015-7974?

    To fix CVE-2015-7974, upgrade your NTP software to version 4.2.8p12 or later, or 4.3.90 or later.

  • What software versions are affected by CVE-2015-7974?

    CVE-2015-7974 affects NTP versions before 4.2.8p6 and 4.3.x before 4.3.90.

  • Can CVE-2015-7974 lead to remote attacks?

    Yes, CVE-2015-7974 can allow remote attackers to conduct impersonation attacks using an arbitrary trusted key.

  • Is there a workaround for CVE-2015-7974?

    There is no specific workaround for CVE-2015-7974; patching the software is the recommended solution.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203