Vulnerability Details : CVE-2015-7848
Potential exploit
An integer overflow can occur in NTP-dev.4.3.70 leading to an out-of-bounds memory copy operation when processing a specially crafted private mode packet. The crafted packet needs to have the correct message authentication code and a valid timestamp. When processed by the NTP daemon, it leads to an immediate crash.
Vulnerability category: Overflow
Products affected by CVE-2015-7848
- cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:-:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_balance:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_unified_manager:-:*:*:*:*:clustered_data_ontap:*:*
- cpe:2.3:a:netapp:data_ontap_operating_in_7-mode:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_performance_manager:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-7848
1.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-7848
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | 2025-05-23 |
CWE ids for CVE-2015-7848
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-7848
-
https://security.gentoo.org/glsa/201607-15
NTP: Multiple vulnerabilities (GLSA 201607-15) — Gentoo securityThird Party Advisory
-
http://www.talosintelligence.com/reports/TALOS-2015-0052/
TALOS-2015-0052 || Cisco Talos Intelligence Group - Comprehensive Threat IntelligenceExploit;Technical Description;Third Party Advisory;VDB Entry
-
https://security.netapp.com/advisory/ntap-20171004-0001/
October 2015 Network Time Protocol Daemon (ntpd) Vulnerabilities in Multiple NetApp Products | NetApp Product SecurityThird Party Advisory
-
http://www.securityfocus.com/bid/77275
Network Time Protocol CVE-2015-7848 Denial of Service VulnerabilityBroken Link
-
http://www.securitytracker.com/id/1033951
ntp Multiple Flaws Let Remote Users Deny Service, View Files, and Bypass Authentication to Modify the Time - SecurityTrackerBroken Link
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