SB2017011317 - Input validation error in ntp
Published: January 13, 2017 Updated: August 8, 2020
Security Bulletin ID
SB2017011317
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2016-7434)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The read_mru_list function in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (crash) via a crafted mrulist query.
Remediation
Install update from vendor's website.
References
- http://nwtime.org/ntp428p9_release/
- http://support.ntp.org/bin/view/Main/NtpBug3082
- http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
- http://www.securityfocus.com/bid/94448
- http://www.securitytracker.com/id/1037354
- 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://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc
- https://www.exploit-db.com/exploits/40806/
- https://www.kb.cert.org/vuls/id/633847