#VU13437 Buffer overflow in Cisco NX-OS - CVE-2018-0301

Vulnerability identifier: #VU13437

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-0301

CWE-ID: CWE-120

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco NX-OS
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists in the NX-API feature of Cisco NX-OS Software due to boundary error when incorrect input validation in the authentication module of the NX-API subsystem. A remote unauthenticated attacker can send a specially crafted HTTP or HTTPS packet to the management interface of an affected system with the NX-API feature enabled, trigger memory corruption and execute arbitrary code with root privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Cisco NX-OS: All versions

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-nxos-bo

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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.