RCE in NTP
CVE-2017-6455
NTP before 4.2.8p10 and 4.3.x before 4.3.94, when using PPSAPI, allows local users to gain privileges via a DLL in the PPSAPI_DLLS environment variable.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (38.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- NTP — versions 4.2.8, 4.3.0, 4.3.1
Weakness classification (CWE)
References
- www.securitytracker.com/id/1038123 (VDB Entry, Third Party Advisory, vdb-entry)
- support.apple.com/HT208144
- www.securityfocus.com/bid/97074 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1039427 (vdb-entry)
- support.ntp.org/bin/view/Main/NtpBug3384 (Patch, Vendor Advisory)
- support.ntp.org/bin/view/Main/SecurityNotice (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-6455?
- CVE-2017-6455 is a high-severity vulnerability in NTP, classified under Code Injection. CVSS score: 7.0/10. Published 2017-03-27.
- How severe is CVE-2017-6455?
- High severity. CVSS v3 base score is 7.0 out of 10.