CVE-2015-7691

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.62% Top 20%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory ntp.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1274254 third party advisory vdb entry issue tracking
http://www.securityfocus.com/bid/77274 third party advisory vdb entry
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html third party advisory
http://support.ntp.org/bin/view/Main/NtpBug2899 vendor advisory
http://rhn.redhat.com/errata/RHSA-2016-2583.html third party advisory vendor advisory
http://www.securitytracker.com/id/1033951 third party advisory vdb entry
http://rhn.redhat.com/errata/RHSA-2016-0780.html third party advisory vendor advisory
http://www.debian.org/security/2015/dsa-3388 third party advisory vendor advisory
https://security.gentoo.org/glsa/201607-15 vendor advisory third party advisory vdb entry
https://security.netapp.com/advisory/ntap-20171004-0001/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2015-7691?
CVE-2015-7691 has been scored as a high severity vulnerability.
How to fix CVE-2015-7691?
To fix CVE-2015-7691, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-7691 being actively exploited in the wild?
It is possible that CVE-2015-7691 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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