1) Execution with unnecessary privileges

EUVDB-ID: #VU62325

Risk: Low

CVSSv3.1: 4.5 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-20676

CWE-ID: CWE-250 - Execution with Unnecessary Privileges

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insufficient input validation of data that is passed into the Tcl interpreter. A local user with privilege level 15 can load malicious Tcl code and execute arbitrary commands as root.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XE: All versions

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CPE2.3

• cpe:2.3:o:cisco_systems:cisco_ios_xe:*:*:*:*:*:*:*:*
• Full software list in CPE2.3 format available after registration.

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-priv-esc-grbtubU

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.