CVE-2015-1798

Description

The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC.

Category

1.8
CVSS
Severity: Low
CVSS 2.0 •
EPSS 0.68% Top 30%
Vendor Advisory ubuntu.com Vendor Advisory marc.info Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory apple.com Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory cisco.com Vendor Advisory mandriva.com Vendor Advisory redhat.com Vendor Advisory cisco.com Vendor Advisory debian.org Vendor Advisory ntp.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securitytracker.com/id/1032032 vdb entry
http://www.ubuntu.com/usn/USN-2567-1 vendor advisory
http://www.kb.cert.org/vuls/id/374268 third party advisory us government resource
http://marc.info/?l=bugtraq&m=143213867103400&w=2 vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155864.html vendor advisory
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities vendor advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10114
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155863.html vendor advisory
http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html vendor advisory
http://lists.opensuse.org/opensuse-updates/2015-04/msg00052.html vendor advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
https://security.gentoo.org/glsa/201509-01 vendor advisory
http://tools.cisco.com/security/center/viewAlert.x?alertId=38276 vendor advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2015:202 vendor advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
http://www.securityfocus.com/bid/73951 vdb entry
http://support.apple.com/kb/HT204942
http://rhn.redhat.com/errata/RHSA-2015-1459.html vendor advisory
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-ntpd vendor advisory
http://bugs.ntp.org/show_bug.cgi?id=2779
http://www.debian.org/security/2015/dsa-3223 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-1798?
CVE-2015-1798 has been scored as a low severity vulnerability.
How to fix CVE-2015-1798?
To fix CVE-2015-1798, 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-2015-1798 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-1798 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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