Junos OS and Junos OS Evolved: When telemetry collectors are frequently subscribing and unsubscribing to sensors chassisd or rpd will 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 22.4R3-S8, 23.2R2-S5, 23.4R2, 22.4R3-S8-EVO, 23.2R2-S5-EVO, and 1 more
- 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: no
- Technical impact: partial
Summary
A Use After Free vulnerability in the chassis daemon (chassisd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based attacker authenticated with low privileges to cause a Denial-of-Service (DoS). When telemetry collectors are frequently subscribing and unsubscribing to sensors continuously over a long period of time, telemetry-capable processes like chassisd, rpd or mib2d will crash and restart, which - depending on the process - can cause a complete outage until the system has recovered. This issue affects: Junos OS: • all versions before 22.4R3-S8, • 23.2 versions before 23.2R2-S5, • 23.4 versions before 23.4R2; Junos OS Evolved: • all versions before 22.4R3-S8-EVO, • 23.2 versions before 23.2R2-S5-EVO, • 23.4 versions before 23.4R2-EVO.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Juniper Networks Junos OS
fixed in 22.4R3-S8; From 23.2 · fixed in 23.2R2-S5; From 23.4 · fixed in 23.4R2
- Juniper Networks Junos OS Evolved
fixed in 22.4R3-S8-EVO; From 23.2 · fixed in 23.2R2-S5-EVO; From 23.4 · fixed in 23.4R2-EVO