Junos OS: Attempting to access specific sensors on platforms not supporting these will lead to a chassisd crash
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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-S5, 22.1R3-S4, 22.2R3, 22.4R2
- 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 Check for Unusual or Exceptional Conditions vulnerability in the chassis management daemon (chassisd) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). If an attempt is made to access specific sensors on platforms not supporting these sensors, either via GRPC or netconf, chassisd will crash and restart leading to a restart of all FPCs and thereby a complete outage. This issue affects Junos OS: • 21.4 versions from 21.4R3 before 21.4R3-S5, • 22.1 versions from 22.1R3 before 22.1R3-S4, • 22.2 versions from 22.2R2 before 22.2R3, • 22.3 versions from 22.3R1 before 22.3R2-S2, 22.3R3, • 22.4 versions from 22.4R1 before 22.4R2. This issue does not affect Junos OS versions earlier than 21.4.
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-S5; From 22.1R3 · fixed in 22.1R3-S4; From 22.2R2 · fixed in 22.2R3; From 22.4R1 · fixed in 22.4R2