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CVE-2015-7853

CRITICALCVSS 9.8/10EPSS 11.78%

Last modified

CVE-2015-7853 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative input value.. EPSS estimates a 11.78% chance of exploitation in the next 30 days.

Description

The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative input value.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
11.78%

95.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
NtpNtp>= 4.2.0, < 4.2.8
NtpNtp>= 4.3.0, < 4.3.77
NtpNtp4.2.8
NetappOncommand BalanceAll versions
NetappOncommand Performance ManagerAll versions
NetappOncommand Unified ManagerAll versions
NetappClustered Data OntapAll versions
NetappData OntapAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-7853?
The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative input value.
How severe is CVE-2015-7853?
CVE-2015-7853 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 11.78% probability of exploitation in the next 30 days.
How do I fix CVE-2015-7853?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-7853?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST