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CVE-2015-1821

UnknownEPSS 3.44%

Last modified

CVE-2015-1821 is a vulnerability of currently unknown severity. Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder.. EPSS estimates a 3.44% chance of exploitation in the next 30 days.

Description

Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder.

Metrics

EPSS Probability
3.44%

87.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
TuxfamilyChrony<= 1.31
DebianDebian Linux7.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-1821?
Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder.
How severe is CVE-2015-1821?
Severity scoring for CVE-2015-1821 is pending analysis. The EPSS model estimates a 3.44% probability of exploitation in the next 30 days.
How do I fix CVE-2015-1821?
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-2015-1821?

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

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Source: NVD / NIST