Improper access control in Cisco IOS and IOS XE Software



Published: 2024-04-18
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-20373
CWE-ID CWE-284
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Cisco IOS
Operating systems & Components / Operating system

Cisco IOS XE
Operating systems & Components / Operating system

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper access control

EUVDB-ID: #VU88807

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

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

External links

http://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.



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