NULL Pointer Dereference Affecting ntp-doc 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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-RHEL7-NTPDOC-1460374
- published26 Jul 2021
- disclosed21 Nov 2016
Introduced: 21 Nov 2016
CVE-2016-9311 (opens in a new tab)How to fix?
Upgrade RHEL:7 ntp-doc to version 0:4.2.6p5-25.el7_3.1 or higher.
This issue was patched in RHSA-2017:0252.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ntp-doc package and not the ntp-doc package as distributed by RHEL.
See How to fix? for RHEL: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/