Improper input validation in Citrix Xenserver
CVE-2015-7704
The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.107 (95.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.110 · newest: 0.107 · change: -0.003
Affected products
- Citrix Xenserver — versions 6.0.2, 6.2.0, 6.5
- Mcafee Enterprise Security Manager
- NetApp Clustered Data Ontap
- NetApp Data Ontap
- NetApp Oncommand Performance Manager
- NetApp Oncommand Unified Manager
- NTP — versions 4.2.8
- Debian Linux — versions 7.0, 8.0, 9.0
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 6.0, 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (VDB Entry, Third Party Advisory, Issue Tracking)
- rhn.redhat.com/errata/RHSA-2015-1930.html (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/77280 (VDB Entry, Third Party Advisory, vdb-entry)
- www.kb.cert.org/vuls/id/718152 (US Government Resource, Third Party Advisory, third-party-advisory)
- bugs.ntp.org/show_bug.cgi (Issue Tracking, Vendor Advisory)
- support.citrix.com/article/CTX220112 (Third Party Advisory)
- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html (Third Party Advisory)
- security.netapp.com/advisory/ntap-20171004-0002/ (Third Party Advisory)
- www.securitytracker.com/id/1033951 (VDB Entry, Third Party Advisory, vdb-entry)
- support.ntp.org/bin/view/Main/SecurityNotice (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2015-7704?
- CVE-2015-7704 is a high-severity vulnerability in Citrix Xenserver, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2017-08-07.
- How severe is CVE-2015-7704?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2015-7704 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.