Out-of-bounds Write Affecting ntp-perl package, versions <0:4.2.6p5-44.34.amzn1
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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- published27 Sept 2021
- disclosed27 Mar 2017
Introduced: 27 Mar 2017
CVE-2017-6451 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2018.03 ntp-perl to version 0:4.2.6p5-44.34.amzn1 or higher.
This issue was patched in ALAS-2017-816.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ntp-perl package and not the ntp-perl package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.
The mx4200_send function in the legacy MX4200 refclock in NTP before 4.2.8p10 and 4.3.x before 4.3.94 does not properly handle the return value of the snprintf function, which allows local users to execute arbitrary code via unspecified vectors, which trigger an out-of-bounds memory write.
References
- http://www.securityfocus.com/bid/97058
- https://support.apple.com/HT208144
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
- http://support.ntp.org/bin/view/Main/NtpBug3378
- http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6451
- http://www.securitytracker.com/id/1038123
- http://www.securitytracker.com/id/1039427