Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2016-7434 |
CWE-ID | CWE-20 |
Exploitation vector | Network |
Public exploit | Public exploit code for vulnerability #1 is available. |
Vulnerable software Subscribe |
ntp Server applications / Other server solutions |
Vendor | ntp.org |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU39825
Risk: Medium
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2016-7434
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsntp: 4.3.0 - 4.3.93
External linkshttp://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
http://bto.bluecoat.com/security-advisory/sa139
http://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us
http://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc
http://www.exploit-db.com/exploits/40806/
http://www.kb.cert.org/vuls/id/633847
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.