Junos OS and Junos OS Evolved: Receipt of a specific malformed BGP path attribute leads to an RPD 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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-S8, 22.2R3-S4, 22.4R3-S3, 23.2R2-S1, 21.4R3-S8-EVO, and 3 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
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 cause Denial of Service (DoS). When a BGP UPDATE with malformed path attribute is received over an established BGP session, rpd crashes and restarts. Continuous receipt of a BGP UPDATE with a specifically malformed path attribute will create a sustained Denial of Service (DoS) condition for impacted devices. While this issue affects systems running 32-bit and 64-bit systems, the probability of impact on 64-bit system is extremely low. According to KB25803 https://supportportal.juniper.net/s/article/Junos-How-to-check-if-Junos-OS-is-64-or-32-bit-on-a-router , customers can confirm 32-bit or 64-bit system via the ' show version detail ' command: lab@router> show version detail| match 32 JUNOS 32-bit kernel Software Suite lab@router> show version detail| match 64 JUNOS 64-bit kernel Software Suite This issue affects: Juniper Networks Junos OS: • All versions before 21.4R3-S8, • from 22.2 before 22.2R3-S4, • from 22.4 before 22.4R3-S3, • from 23.2 before 23.2R2-S1, • from 23.4 before 23.4R1-S2, 23.4R2. Juniper Networks Junos OS Evolved: * All versions before 21.4R3-S8-EVO, • from 22.2 before 22.2R3-S4-EVO, • from 22.4 before 22.4R3-S3-EVO, • from 23.2 before 23.2R2-S1-EVO, • from 23.4 before 23.4R1-S2-EVO, 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 21.4R3-S8; From 22.2 · fixed in 22.2R3-S4; From 22.4 · fixed in 22.4R3-S3; From 23.2 · fixed in 23.2R2-S1
- Juniper Networks Junos OS Evolved
fixed in 21.4R3-S8-EVO; From 22.2 · fixed in 22.2R3-S4-EVO; From 22.4 · fixed in 22.4R3-S3-EVO; From 23.2 · fixed in 23.2R2-S1-EVO