CVE-2015-7691

high-risk

Published 2017-08-07

The crypto_xmit function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash) via crafted packets containing particular autokey operations. NOTE: This vulnerability exists due to an incomplete fix for CVE-2014-9750.

Do I need to act?

11.8% chance of exploitation in next 30 days

EPSS score — higher than 88% 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 7.5/10 High

NETWORK / LOW complexity

Affected Products (20)

Ntp

Linux

Debian Linux

Oncommand Unified Manager

Clustered Data Ontap

Data Ontap

Enterprise Linux Desktop

Enterprise Linux Server

Affected Vendors

Oracle Debian Redhat Netapp Ntp

References (20)

Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-0780.html

Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-2583.html

Vendor Advisory http://support.ntp.org/bin/view/Main/NtpBug2899

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

Third Party Advisory http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.h...

Third Party Advisory http://www.securityfocus.com/bid/77274

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

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1274254

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

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