#VU7366 Privilege escalation in Cisco IOS XR - CVE-2017-6728

Vulnerability identifier: #VU7366

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-6728

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Cisco IOS XR
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

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

The weakness exists in in the CLI of Cisco IOS XR Software due to incorrect permissions. A local attacker can execute arbitrary code with root privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
The vulnerability is addressed in the following versions:
6.3.1.15i.BASE, 6.2.3.1i.BASE, 6.2.2.15i.BASE, 6.1.4.10i.BASE.

Vulnerable software versions

Cisco IOS XR: 6.2.1

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170705-ios

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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