Two vulnerabilities in Cisco IOS XR

Published: 2017-06-22

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-6719 CVE-2017-6718
CWE-ID	CWE-77
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Cisco IOS XR Operating systems & Components / Operating system
Vendor	Cisco Systems, Inc

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Command injection

EUVDB-ID: #VU7177

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-6719

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a local authenticated attacker to execute arbitrary commands on the host operating system.

The vulnerability exists in the CLI of Cisco IOS XR Software due to insufficient input validation. A local attacker can send a specially crafted input to a command in a specific group and execute arbitrary commands with root privileges.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Cisco IOS XR: 6.2.1

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170621-ios

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.

2) Privilege escalation

EUVDB-ID: #VU7178