CVE-2015-7704: citrix xenserver Improper Input Validation
CVSS: 7.5v3.1HighModified
AliasesRHSA-2015:2520UBUNTU-CVE-2015-7704DEBIAN-CVE-2015-7704
Published 07-08-2017Last modified 06-08-2024
Vulnerability summary
CVE-2015-7704 is a high (CVSS 7.5) Improper Input Validation vulnerability in citrix xenserver. EPSS estimates a 10.66% chance of exploitation in the next 30 days, higher than 95.7% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
10.66%
0%100%
Medium · -0.29 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 13 · Related 9Timeline
- 07-08-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 3 sources · 3 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
High 7.5Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
10.66%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
-0.29 pp
From 10.95% on 18-09-2026
18-09-202618-10-2026
EPSS score10.66%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat11 products
- enterprise_linux_desktop6.0 | 7.0
- enterprise_linux_server6.0 | 7.0
- enterprise_linux_server_aus6.5 | 6.6 | 7.3 | 7.4 | 7.6 | 7.7
- enterprise_linux_server_eus6.5 | 6.6 | 6.7 | 7.1 | 7.3 | 7.4 | 7.5 | 7.6 | 7.7
- enterprise_linux_server_tus6.5 | 6.6 | 7.3 | 7.6 | 7.7
Netapp4 products
Debian2 products
- ntp< 1:4.2.8p4+dfsg-3
- debian_linuxEOL7.0 | 8.0 | 9.0
Citrix1 product
- xenserver6.0.2 | 6.2.0 | 6.5 | 7.0
Mcafee1 product
- enterprise_security_manager< 10.4.0 | ≥ 11.0.0, < 11.2.0
Ntp1 product
- ntp≥ 4.2.0, < 4.2.8 | ≥ 4.3.0, < 4.3.77 | 4.2.8 | 4.2.8:p1 | 4.2.8:p1-beta1 | 4.2.8:p1-beta2 | 4.2.8:p1-beta3 | 4.2.8:p1-beta4 | 4.2.8:p1-beta5 | 4.2.8:p1-rc1 | 4.2.8:p1-rc2 | 4.2.8:p2 | 4.2.8:p2-rc1 | 4.2.8:p2-rc2 | 4.2.8:p2-rc3 | 4.2.8:p3 | 4.2.8:p3-rc1 | 4.2.8:p3-rc2 | 4.2.8:p3-rc3
Ubuntu1 product
- ntp< 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5
7 vendors · 21 products
References
31 links- bugzilla.redhat.com/show_bug.cgi?id=1271070X Refsource CONFIRMIssue TrackingThird Party AdvisoryVDB EntryREPORT
- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlX Refsource CONFIRMThird Party Advisory
Show all 31 references
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839X Refsource CONFIRMThird Party AdvisoryVDB Entry
