Improper access control in Cisco IOS and IOS XE Software

1) Improper access control

EUVDB-ID: #VU88807

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-20373

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the implementation of the Simple Network Management Protocol (SNMP) IPv4 access control list (ACL) feature. A remote attacker can bypass implemented security restrictions and perform SNMP operations that should be denied.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco IOS: 17.6.1a - 17.6.6

Cisco IOS XE: 17.6.1a - 17.6.6

CPE2.3

• cpe:2.3:o:cisco_systems:cisco_ios:17.6.6:*:*:*:*:*:*:*
• cpe:2.3:o:cisco_systems:cisco_ios_xe:17.6.6:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-uwBXfqww

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.