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CVE-2014-3347

UnknownEPSS 0.98%

Last modified

CVE-2014-3347 is a vulnerability of currently unknown severity. Cisco IOS 15.1(4)M2 on Cisco 1800 ISR devices, when the ISDN Basic Rate Interface is enabled, allows remote attackers to cause a denial of service (device hang) by leveraging knowledge of the ISDN phone number to trigger an interrupt timer collision during entropy collection, leading to an invalid state of the hardware encryption module, aka Bug ID CSCul77897.. EPSS estimates a 0.98% chance of exploitation in the next 30 days.

Description

Cisco IOS 15.1(4)M2 on Cisco 1800 ISR devices, when the ISDN Basic Rate Interface is enabled, allows remote attackers to cause a denial of service (device hang) by leveraging knowledge of the ISDN phone number to trigger an interrupt timer collision during entropy collection, leading to an invalid state of the hardware encryption module, aka Bug ID CSCul77897.

Metrics

EPSS Probability
0.98%

57.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos15.1\(4\)m2
Cisco1801 Integrated Service RouterAll versions
Cisco1802 Integrated Service RouterAll versions
Cisco1803 Integrated Service RouterAll versions
Cisco1811 Integrated Service RouterAll versions
Cisco1812 Integrated Service RouterAll versions
Cisco1841 Integrated Service RouterAll versions
Cisco1861 Integrated Service RouterAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2014-3347?
Cisco IOS 15.1(4)M2 on Cisco 1800 ISR devices, when the ISDN Basic Rate Interface is enabled, allows remote attackers to cause a denial of service (device hang) by leveraging knowledge of the ISDN phone number to trigger an interrupt timer collision during entropy collection, leading to an invalid state of the hardware encryption module, aka Bug ID CSCul77897.
How severe is CVE-2014-3347?
Severity scoring for CVE-2014-3347 is pending analysis. The EPSS model estimates a 0.98% probability of exploitation in the next 30 days.
How do I fix CVE-2014-3347?
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-2014-3347?

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

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Source: NVD / NIST