Multiple vulnerabilities in Cisco Umbrella

Published: 2021-04-08

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-1474 CVE-2021-1475
CWE-ID	CWE-94 CWE-74
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Cisco Umbrella Client/Desktop applications / Other client software
Vendor	Cisco Systems, Inc

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) CSV Injection

EUVDB-ID: #VU51974

Risk: Medium

CVSSv4.0: 1.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-1474

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote user to inject arbitrary code into CSV files.

The vulnerability exists due to improper neutralization of formula elements in the comma-separated value (CSV) file that is generated by the Admin audit log export feature. A remote authenticated attacker can inject arbitrary code into a CSV file.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Umbrella: before 1.2.0

CPE2.3

cpe:2.3:a:cisco_systems:cisco_umbrella:*:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-inject-gbZGHP5T

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

2) Link Injection

EUVDB-ID: #VU51975

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-1475

CWE-ID: CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')