Network disruption via ICMPv6 ARP queue misrouting
Published Oct 12, 2023 · Updated Sep 18, 2024
Denial of service in storm control in Juniper Networks Junos OS on QFX5k devices allows remote attackers to disrupt switching via ICMPv6 traffic. The storm-control security check incorrectly punts ICMPv6 packets to the ARP queue, creating a Layer 2 loop that triggers DDoS violations and syslog events. Exposure requires storm control to be enabled in an EVPN/VXLAN environment; the documented consequence is loss of network stability, not data disclosure or modification.
Summary
What happened
Denial of service in storm control in Juniper Networks Junos OS on QFX5k devices allows remote attackers to disrupt switching via ICMPv6 traffic. The storm-control security check incorrectly punts ICMPv6 packets to the ARP queue, creating a Layer 2 loop that triggers DDoS violations and syslog events. Exposure requires storm control to be enabled in an EVPN/VXLAN environment; the documented consequence is loss of network stability, not data disclosure or modification.
The record
- CVE
- CVE-2023-44181
- Published
- Oct 12, 2023
- Updated
- Sep 18, 2024
- Vendor
- Juniper Networks
- Product
- Junos OS
- Classifications
- CWE-835, T1498
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 12, 2023CVE publishedPublication date reported by the CVE source.
- Sep 18, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <20.2R3-S6
- Affected versionversion=20.3 <20.3R3-S5
- Affected versionversion=20.4 <20.4R3-S5
- Affected versionversion=21.1 <21.1R3-S4
- Affected versionversion=21.2 <21.2R3-S3
- Affected versionversion=21.3 <21.3R3-S2
- Affected versionversion=21.4 <21.4R3
- Affected versionversion=22.1 <22.1R3
- Affected versionversion=22.2 <22.2R2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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