#VU98406 Improper Check for Unusual or Exceptional Conditions in Juniper Junos OS and Junos OS Evolved - CVE-2024-47507

Vulnerability identifier: #VU98406

Vulnerability 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-2024-47507

CWE-ID: CWE-754

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system
Junos OS Evolved
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

Description

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

The vulnerability exists due to improper error handling in the routing protocol daemon (rpd) when handling BGP update messages. A remote attacker can send specially crafted BGP update message, which contains the aggregator attribute with an ASN value of zero (0), and cause issues for the downstream BGP peers receiving this.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 21.4R1-S1, 21.4R1-S2, 21.4R2-S1, 21.4R2-S2, 21.4R3-S1, 21.4R3-S2, 21.4R3-S3, 21.4R3-S4, 21.4R3-S5, 21.4R1, 21.4R2, 22.1R1-S1, 22.1R1-S2, 22.1R2-S1, 22.1R2-S2, 22.1R3-J1, 22.1R3-S1, 22.1R3-S2, 22.1R3-S3, 22.1R3-S4, 22.1R3-S5, 22.1R3-S5.3, 22.1R1, 22.1R2, 22.2R1-S1, 22.2R1-S2, 22.2R2-S1, 22.2R2-S2, 22.2R3-S1, 22.2R3-S2, 22.2R1, 22.2R2, 22.4R1-S1, 22.4R1-S2, 22.4R2-S1, 22.4R2-S2, 22.4R3-S1, 22.4R3-S2, 22.4R3-S3, 22.4R3-S4, 22.4R3-S5, 22.4R1, 22.4R2, 23.2R1-S1, 23.2R1-S2

Junos OS Evolved: 21.4R1-EVO, 21.4R1-S1-EVO, 21.4R1-S2-EVO, 21.4R2-EVO, 21.4R2-S1-EVO, 21.4R2-S2-EVO, 21.4R3-EVO, 21.4R3-S1-EVO, 21.4R3-S2-EVO, 21.4R3-S3-EVO, 21.4R3-S4-EVO, 21.4R3-S5-EVO, 21.4R3-S6-EVO, 22.2R1-EVO, 22.2R1-S1-EVO, 22.2R2-EVO, 22.2R2-S1-EVO, 22.2R2-S2-EVO, 22.2R3-EVO, 22.2R3-S1-EVO, 22.2R3-S2-EVO, 22.2R3-S3-EVO, 22.2-EVO, 22.4R1-EVO, 22.4R1-S1-EVO, 22.4R1-S2-EVO, 22.4R2-EVO, 22.4R2-S1-EVO, 22.4R2-S2-EVO

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External links
https://supportportal.juniper.net/s/article/2024-10-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-BGP-update-message-containing-aggregator-attribute-with-an-ASN-value-of-zero-0-is-accepted-CVE-2024-47507

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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.