NULL Pointer Dereference Affecting ntp package, versions <0:4.2.6p5-25.el7_3.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-CENTOS7-NTP-2077865
- published26 Jul 2021
- disclosed21 Nov 2016
Introduced: 21 Nov 2016
CVE-2016-9311 (opens in a new tab)How to fix?
Upgrade Centos:7 ntp to version 0:4.2.6p5-25.el7_3.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ntp package and not the ntp package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
ntpd in NTP before 4.2.8p9, when the trap service is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted packet.
References
- http://www.securityfocus.com/bid/94444
- https://www.kb.cert.org/vuls/id/633847
- http://nwtime.org/ntp428p9_release/
- https://bto.bluecoat.com/security-advisory/sa139
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03799en_us
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03885en_us
- http://support.ntp.org/bin/view/Main/NtpBug3119
- http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
- https://access.redhat.com/security/cve/CVE-2016-9311
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc
- http://rhn.redhat.com/errata/RHSA-2017-0252.html
- https://access.redhat.com/errata/RHSA-2017:0252
- http://www.securitytracker.com/id/1037354
- https://usn.ubuntu.com/3707-2/