Denial of service in Cisco IOS XE



Published: 2017-03-23 | Updated: 2017-03-23
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-3856
CWE-ID CWE-399
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Cisco IOS XE
Operating systems & Components / Operating system

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Denial of service

EUVDB-ID: #VU6163

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-3856

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS conditions on the target system.

The weakness exists due to insufficient resource handling. A remote can send a high number of requests to the web user interface and cause the affected device to reload.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Cisco IOS XE: 3.1 - 3.17S

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-webui


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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