CVE-2015-7871

critical-risk

Published 2017-08-07

Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass authentication.

Do I need to act?

79.6% chance of exploitation in next 30 days

EPSS score — higher than 20% of all CVEs

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Ntp

Netapp Ntp Debian

Vendor Advisory http://support.ntp.org/bin/view/Main/NtpBug2941

Third Party Advisory http://www.debian.org/security/2015/dsa-3388

Third Party Advisory http://www.securityfocus.com/bid/77287

Third Party Advisory http://www.securitytracker.com/id/1033951

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1274265

Third Party Advisory https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c...

Third Party Advisory https://security.gentoo.org/glsa/201604-03

Third Party Advisory https://security.gentoo.org/glsa/201607-15

Third Party Advisory https://security.netapp.com/advisory/ntap-20171004-0001/