CVE-2024-47507: Junos OS and Junos OS Evolved: BGP update message containing aggregator attribute with an ASN value of zero (0) is accepted
First published: Fri Oct 11 2024(Updated: )
An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause an integrity impact to the downstream devices. When a peer sends a BGP update message which contains the aggregator attribute with an ASN value of zero (0), rpd accepts and propagates this attribute, which can cause issues for downstream BGP peers receiving this. This issue affects: Junos OS: * All versions before 21.4R3-S6, * 22.2 versions before 22.2R3-S3, * 22.4 versions before 22.4R3; Junos OS Evolved: * All versions before 21.4R3-S7-EVO, * 22.2 versions before 22.2R3-S4-EVO, * 22.4 versions before 22.4R3-EVO.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Junos | <21.4R3-S6 | |
| Juniper Junos | <22.2R3-S3 | |
| Juniper Junos | <22.4R3 | |
| Juniper Networks Junos OS | <21.4R3-S7-EVO | |
| Juniper Networks Junos OS | <22.2R3-S4-EVO | |
| Juniper Networks Junos OS | <22.4R3-EVO |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 21.4R3-S7-EVO, 22.2R3-S4-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases; Junos OS: 21.4R3-S6, 22.1R3-S6, 22.2R3-S3, 22.4R3, 23.2R1, and all subsequent releases.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-47507?
CVE-2024-47507 is classified as a critical vulnerability due to its potential to impact the integrity of downstream devices.
How do I fix CVE-2024-47507?
To address CVE-2024-47507, upgrade to the latest patched version of Junos OS or Junos OS Evolved as recommended by Juniper Networks.
Which versions are affected by CVE-2024-47507?
CVE-2024-47507 affects Junos OS versions prior to 21.4R3-S6, 22.2R3-S3, 22.4R3 and Junos OS Evolved versions prior to 21.4R3-S7-EVO, 22.2R3-S4-EVO, 22.4R3-EVO.
What impact can CVE-2024-47507 have on my network?
CVE-2024-47507 allows an unauthenticated attacker to cause integrity impacts to the downstream devices within the network.
Is there a workaround for CVE-2024-47507?
No specific workarounds are provided for CVE-2024-47507; the best mitigation is to upgrade to the fixed versions promptly.
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