Vulnerability identifier: #VU11346
Vulnerability risk: Low
CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-77
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Cisco IOS XE
Operating systems & Components /
Operating system
Vendor: Cisco Systems, Inc
Description
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The weakness exists in the CLI parser of Cisco IOS XE Software due to the affected software improperly sanitizing command arguments to prevent access to internal data structures on a device. A local attacker with privileged EXEC mode (privilege level 15) access can execute CLI commands that contain crafted arguments, gain access to the underlying Linux shell and execute arbitrary commands with root privileges.
Mitigation
The vulnerability is addressed in the following version 16.6.2, 16.7(0.121), 16.6(1.70), 16.5(1.315), 16.3(5.17), 15.7(3.1.14A)OT, 15.7(3.1.9T)OT, 15.7(3.0t)M, 15.7(3)M1, 15.7(2.0v)M0.6, 15.6(3)M4, 15.6(3)M3.1, 15.6(2.10)SP3, 15.6(2)SP4, 15.5(3)S6.13, 15.5(3)M7, 15.5(3)M6.1, 15.5(1.0.91)SY1, 15.5(1)SY1, 15.5(1)IC1.73, 15.5(1)IA1.509, 15.4(3)S9, 15.4(3)S8.7, 15.4(3)M9, 15.2(6.5.1i)E1, 15.2(6.4.66i)E1, 15.2(6.4.0i)E1, 15.2(6.2.72i)E, 15.2(6)E1, 15.2(4.7.12)EA7, 15.2(1)SY6, 15.2(1)SY5.97
Vulnerable software versions
Cisco IOS XE: 16.5.1
External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-privesc2
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.