PT-2017-1787 · Cisco · Cisco Ios Xe

Published 2017-04-05 · Updated 2017-07-12 · CVE-2017-6606

Positive Technologies (AI Summary)

CVSS v2.0

6.9

Medium

Base vector

AV:L/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software versions 15.2(1)E through 16.2.0 Cisco IOS XE Software version 15.6(1.1)S

Description A vulnerability in a startup script of Cisco IOS XE Software could allow an unauthenticated attacker with physical access to the targeted system to execute arbitrary commands on the underlying operating system with the privileges of the root user. The vulnerability is due to insufficient validation of ROMMON variables values. An attacker could exploit this vulnerability by manipulating the content of some ROMMON variables, which will allow an external script containing the command to execute at boot time. A reload of the affected system is needed to exploit the vulnerability. An attacker would need console access to exploit this vulnerability.

Recommendations For Cisco IOS XE Software versions 15.2(1)E through 16.2.0, update to a fixed release such as Denali-16.1.3 or 16.2(1.8). For Cisco IOS XE Software version 15.6(1.1)S, update to a fixed release such as 15.6(2)SP or 15.6(2)S1. As a temporary workaround, consider restricting console access to minimize the risk of exploitation.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

BDU:2017-00943

CVE-2017-6606

Affected Products

Cisco Ios Xe

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2017-6606 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170405-iosxe · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-6606 · Vendor Advisory
• https://bdu.fstec.ru/vul/2017-00943 · Security Note
• http://securitytracker.com/id/1038190 · Note
• http://securityfocus.com/bid/97434 · Note