Junos OS: EX4100, EX4400, EX4600, QFX5000 Series: A high rate of specific ICMP traffic will cause the PFE to hang
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.4R2, 23.1R2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). If an attacker sends high rate of specific ICMP traffic to a device with VXLAN configured, this causes a deadlock of the PFE and results in the device becoming unresponsive. A manual restart will be required to recover the device. This issue only affects EX4100, EX4400, EX4600, QFX5000 Series devices. This issue affects: Juniper Networks Junos OS • 21.4R3 versions earlier than 21.4R3-S4; • 22.1R3 versions earlier than 22.1R3-S3; • 22.2R2 versions earlier than 22.2R3-S1; • 22.3 versions earlier than 22.3R2-S2, 22.3R3; • 22.4 versions earlier than 22.4R2; • 23.1 versions earlier than 23.1R2.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Juniper Networks Junos OS
From 21.4R3 · fixed in 21.4R3-S4; From 22.1R3 · fixed in 22.1R3-S3; From 22.2R2 · fixed in 22.2R3-S1; From 22.4 · fixed in 22.4R2; From 23.1 · fixed in 23.1R2