Multiple vulnerabilities in Cisco IOS XE Software



| Updated: 2020-06-05
Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-3212
CVE-2020-3218
CVE-2020-3221
CWE-ID CWE-77
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Cisco IOS XE
Operating systems & Components / Operating system

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Command Injection

EUVDB-ID: #VU28759

Risk: Low

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-3212

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary commands on the system.

The vulnerability exists due to improper input sanitization in the web UI. A remote administrator can uplnout a specially crafted file and execute arbitrary commands on the target system.

This vulnerability affects the following products if they are running affected release of Cisco IOS XE Software: 

  • Cisco Catalyst 3850 Series Switches
  • Cisco Catalyst 3650 Series Switches
  • Cisco Catalyst 9300 Series Switches
  • Cisco Catalyst 9500 Series Switches
  • Cisco Catalyst 9200 Series Switches

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XE: Gibraltar 16.11.1

CPE2.3 External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-web-cmdinj3-44st5CcA


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU28762

Risk: Low

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-3218

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input in the web UI. A remote administrator can first create a malicious file on the affected device itself, then upload a second malicious file to the device and execute arbitrary code on the target system.

This vulnerability affects the following products if they are running affected release of Cisco IOS XE Software: 

  • Cisco Catalyst 3850 Series Switches
  • Cisco Catalyst 3650 Series Switches
  • Cisco Catalyst 9300 Series Switches
  • Cisco Catalyst 9500 Series Switches
  • Cisco Catalyst 9200 Series Switches

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XE: 17.1.1

CPE2.3 External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-rce-uk8BXcUD


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Input validation error

EUVDB-ID: #VU28764

Risk: High

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-3221

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper validation of parameters in a Flexible NetFlow Version 9 record. A remote attacker can send a specially crafted Flexible NetFlow Version 9 packet to the Control and Provisioning of Wireless Access Points (CAPWAP) data port of an affected device and perform a denial of service (DoS) attack.

This vulnerability affects the following products if they are running affected release of Cisco IOS XE Software: 

  •  Cisco Catalyst 9800 Series Wireless Controllers

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XE: Gibraltar 16.10.1 - Gibraltar 16.12.1

CPE2.3 External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-fnfv9-dos-HND6Fc9u


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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