Vulnerability identifier: #VU54031
Vulnerability risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-125
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
ntp
Server applications /
Other server solutions
Vendor: ntp.org
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in the MATCH_ASSOC function. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and cause a denial of service condition on the system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
ntp: 4.2.8p1 - 4.3.91
External links
http://www.kb.cert.org/vuls/id/718152
http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_ntp_4_2_8p7_Security
http://support.ntp.org/bin/view/Main/NtpBug3009
http://www.securityfocus.com/bid/88226
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://security.gentoo.org/glsa/201607-15
http://www.securitytracker.com/id/1035705
http://www.debian.org/security/2016/dsa-3629
http://security.netapp.com/advisory/ntap-20171004-0002/
http://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc
http://access.redhat.com/errata/RHSA-2016:1141
http://rhn.redhat.com/errata/RHSA-2016-1552.html
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
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.