CVE-2015-7855

Public Exploit

Description

The decodenetnum 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 (assertion failure) via a 6 or mode 7 packet containing a long data value.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 48.41% Top 5%
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://www.exploit-db.com/exploits/40840/ exploit vdb entry third party advisory
http://www.securityfocus.com/bid/77283 vdb entry third party advisory
http://www.securitytracker.com/id/1033951 vdb entry third party advisory
http://www.debian.org/security/2015/dsa-3388 third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1274264 issue tracking vdb entry third party advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839 vdb entry third party advisory
http://support.ntp.org/bin/view/Main/NtpBug2922 patch vendor advisory
https://security.gentoo.org/glsa/201607-15 vdb entry third party advisory vendor advisory
https://security.netapp.com/advisory/ntap-20171004-0001/ third party advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf third party advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2015-7855?
CVE-2015-7855 has been scored as a medium severity vulnerability.
How to fix CVE-2015-7855?
To fix CVE-2015-7855, 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-2015-7855 being actively exploited in the wild?
It is possible that CVE-2015-7855 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~48% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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