CVE-2015-7855
MEDIUM
6.5
CVSS Score
Published: August 7, 2017 at 08:00 PM UTC
Updated: June 17, 2026 at 12:33 AM UTC
11 products affected across 4 vendorsDebian LinuxClustered Data ONTAPOncommand Unified Manager
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Severity
MEDIUM6.5
Exploit prediction
EPSS 31%
Description
The decodenetnum function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (assertion failure) via a 6 or mode 7 packet containing a long data value.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%All versions
All versions
All versions
All versions
All versions
4.2.0 ≤ v < 4.2.84.3.0 ≤ v < 4.3.774.2.84.2.8 p14.2.8 p1-beta14.2.8 p1-beta24.2.8 p1-beta34.2.8 p1-beta44.2.8 p1-beta54.2.8 p1-rc14.2.8 p1-rc24.2.8 p24.2.8 p2-rc14.2.8 p2-rc24.2.8 p2-rc34.2.8 p34.2.8 p3-rc14.2.8 p3-rc24.2.8 p3-rc3
Affected range stops below 4.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.3.77, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (11)
x_refsource_CONFIRMPatchVendor Advisory
Source: [email protected]
http://support.ntp.org/bin/view/Main/NtpBug2922Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
http://www.debian.org/security/2015/dsa-3388VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/77283VDB Entryx_refsource_SECTRACKThird Party Advisory
Source: [email protected]
http://www.securitytracker.com/id/1033951x_refsource_CONFIRMIssue TrackingThird Party AdvisoryVDB Entry
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1274264x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdfx_refsource_CONFIRMThird Party AdvisoryVDB Entry
Source: [email protected]
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839Vendor Advisoryx_refsource_GENTOOThird Party AdvisoryVDB Entry
Source: [email protected]
https://security.gentoo.org/glsa/201607-15CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-20
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