Junos OS and Junos OS Evolved: RPD crash when CoS-based forwarding (CBF) policy is configured
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 20.4R3-S10, 21.2R3-S8, 21.3R3, 21.4R3, 22.1R2, and 4 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: yes
- Technical impact: partial
Summary
An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to send a specific routing update, causing an rpd core due to memory corruption, leading to a Denial of Service (DoS). This issue can only be triggered when the system is configured for CoS-based forwarding (CBF) with a policy map containing a cos-next-hop-map action (see below). This issue affects: Junos OS: • all versions before 20.4R3-S10, • from 21.2 before 21.2R3-S8, • from 21.3 before 21.3R3, • from 21.4 before 21.4R3, • from 22.1 before 22.1R2; Junos OS Evolved: • all versions before 21.2R3-S8-EVO, • from 21.3 before 21.3R3-EVO, • from 21.4 before 21.4R3-EVO, • from 22.1 before 22.1R2-EVO.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Juniper Networks Junos OS
fixed in 20.4R3-S10; From 21.2 · fixed in 21.2R3-S8; From 21.3 · fixed in 21.3R3; From 21.4 · fixed in 21.4R3; From 22.1 · fixed in 22.1R2
- Juniper Networks Junos OS Evolved
fixed in 21.2R3-S8-EVO; From 21.3 · fixed in 21.3R3-EVO; From 21.4 · fixed in 21.4R3-EVO; From 22.1 · fixed in 22.1R2-EVO