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CVE-2017-3856

UnknownEPSS 2.48%

Last modified

CVE-2017-3856 is a vulnerability of currently unknown severity. A vulnerability in the web user interface of Cisco IOS XE 3.1 through 3.17 could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to insufficient resource handling by the affected software when the web user interface is under a high load. EPSS estimates a 2.48% chance of exploitation in the next 30 days.

Description

A vulnerability in the web user interface of Cisco IOS XE 3.1 through 3.17 could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to insufficient resource handling by the affected software when the web user interface is under a high load. An attacker could exploit this vulnerability by sending a high number of requests to the web user interface of the affected software. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. To exploit this vulnerability, the attacker must have access to the management interface of the affected software, which is typically connected to a restricted management network. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software, if the web user interface of the software is enabled. By default, the web user interface is not enabled. Cisco Bug IDs: CSCup70353.

Metrics

EPSS Probability
2.48%

82.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xe3.1.0s
CiscoIos Xe3.1.0sg
CiscoIos Xe3.1.1s
CiscoIos Xe3.1.1sg
CiscoIos Xe3.1.2s
CiscoIos Xe3.1.3as
CiscoIos Xe3.1.3s
CiscoIos Xe3.1.4as
CiscoIos Xe3.1.4s
CiscoIos Xe3.1s
CiscoIos Xe3.1sg
CiscoIos Xe3.2.0ja
CiscoIos Xe3.2.0se
CiscoIos Xe3.2.0sg
CiscoIos Xe3.2.0xo
CiscoIos Xe3.2.1s
CiscoIos Xe3.2.1se
CiscoIos Xe3.2.1sg
CiscoIos Xe3.2.1xo
CiscoIos Xe3.2.2s
CiscoIos Xe3.2.2se
CiscoIos Xe3.2.2sg
CiscoIos Xe3.2.3se
CiscoIos Xe3.2.3sg
CiscoIos Xe3.2.4sg
CiscoIos Xe3.2.5sg
CiscoIos Xe3.2.6sg
CiscoIos Xe3.2.7sg
CiscoIos Xe3.2.8sg
CiscoIos Xe3.2.9sg
CiscoIos Xe3.2.11sg
CiscoIos Xe3.2ja
CiscoIos Xe3.2s
CiscoIos Xe3.2se
CiscoIos Xe3.2sg
CiscoIos Xe3.2xo
CiscoIos Xe3.3.0s
CiscoIos Xe3.3.0se
CiscoIos Xe3.3.0sg
CiscoIos Xe3.3.0sq
CiscoIos Xe3.3.0xo
CiscoIos Xe3.3.1s
CiscoIos Xe3.3.1se
CiscoIos Xe3.3.1sg
CiscoIos Xe3.3.1sq
CiscoIos Xe3.3.1xo
CiscoIos Xe3.3.2s
CiscoIos Xe3.3.2se
CiscoIos Xe3.3.2sg
CiscoIos Xe3.3.2xo

Showing 50 of 198 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-3856?
A vulnerability in the web user interface of Cisco IOS XE 3.1 through 3.17 could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to insufficient resource handling by the affected software when the web user interface is under a high load. An attacker could exploit this vulnerability by sending a high number of requests to the web user interface of the affected software. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. To exploit this vulnerability, the attacker must have access to the management interface of the affected software, which is typically connected to a restricted management network. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software, if the web user interface of the software is enabled. By default, the web user interface is not enabled. Cisco Bug IDs: CSCup70353.
How severe is CVE-2017-3856?
Severity scoring for CVE-2017-3856 is pending analysis. The EPSS model estimates a 2.48% probability of exploitation in the next 30 days.
How do I fix CVE-2017-3856?
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-2017-3856?

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

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Source: NVD / NIST