Denial of service in Cisco IOS XR dedicated XML Agent



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-20390
CWE-ID CWE-940
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Cisco IOS XR
Operating systems & Components / Operating system

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Verification of Source of a Communication Channel

EUVDB-ID: #VU97204

Risk: Medium

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

CVE-ID: CVE-2024-20390

CWE-ID: CWE-940 - Improper Verification of Source of a Communication Channel

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack.

The vulnerability exists due to improper input validation of ingress XML packets in the Dedicated XML Agent feature. A remote attacker can send specially crafted packets to the XML TCP port 38751 and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XR: 7.0 - 24.1.1

CPE2.3 External links

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-xml-tcpdos-ZEXvrU2S
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwj39201


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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