Privilege escalation in Cisco IOS XE Software Plug-and-Play
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-1442 |
| CWE-ID | CWE-532 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Cisco IOS XE Operating systems & Components / Operating system Cisco Catalyst 9800 Series Wireless Controllers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 9600 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 9200 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 1100 Series Industrial Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 9400 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 9500 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 9300 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 1000 Series Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 4000 Series Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 3650 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Cloud Services Router 1000V Series Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco ASR 1000 Series Aggregation Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Inclusion of Sensitive Information in Log Files
EUVDB-ID: #VU51704
Risk: Low
CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1442
CWE-ID:
CWE-532 - Information Exposure Through Log Files
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists in a diagnostic command for the Plug-and-Play (PnP) subsystem of Cisco IOS XE Software. A local low-privileged user can run the diagnostic CLI show pnp profile when a specific PnP listener is enabled on the device and obtain a privileged authentication token. This token can be used to send crafted PnP messages and execute privileged commands on the targeted system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco IOS XE: 16.9.1 - 17.1.1s
Cisco Catalyst 9800 Series Wireless Controllers: All versions
Cisco Catalyst 9600 Series Switches: All versions
Cisco Catalyst 9200 Series Switches: All versions
Cisco 1100 Series Industrial Integrated Services Routers: All versions
Cisco Catalyst 9400 Series Switches: All versions
Cisco Catalyst 9500 Series Switches: All versions
Cisco Catalyst 9300 Series Switches: All versions
Cisco 1000 Series Integrated Services Routers: All versions
Cisco 4000 Series Integrated Services Routers: All versions
Cisco Catalyst 3650 Series Switches: All versions
Cisco Cloud Services Router 1000V Series: All versions
Cisco ASR 1000 Series Aggregation Services Routers: All versions
External linkshttp://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-pnp-priv-esc-AmG3kuVL
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCvt41030
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.
