Junos OS and Junos OS Evolved: Malformed BGP UPDATE causes 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 20.4R3-S9, 21.2R3-S7, 21.3R3-S6, 21.4R3-S6, 22.1R3-S4, and 13 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 cause the RPD process to crash leading to a Denial of Service (DoS). When a malformed BGP UPDATE packet is received over an established BGP session, RPD crashes and restarts. Continuous receipt of the malformed BGP UPDATE messages will create a sustained Denial of Service (DoS) condition for impacted devices. This issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations. This issue requires a remote attacker to have at least one established BGP session. This issue affects: Juniper Networks Junos OS: • All versions earlier than 20.4R3-S9; • 21.2 versions earlier than 21.2R3-S7; • 21.3 versions earlier than 21.3R3-S5; • 21.4 versions earlier than 21.4R3-S6; • 22.1 versions earlier than 22.1R3-S4; • 22.2 versions earlier than 22.2R3-S3; • 22.3 versions earlier than 22.3R3-S2; • 22.4 versions earlier than 22.4R3; • 23.2 versions earlier than 23.2R2. Juniper Networks Junos OS Evolved: • All versions earlier than 21.2R3-S7; • 21.3-EVO versions earlier than 21.3R3-S5; • 21.4-EVO versions earlier than 21.4R3-S8; • 22.1-EVO versions earlier than 22.1R3-S4; • 22.2-EVO versions earlier than 22.2R3-S3; • 22.3-EVO versions earlier than 22.3R3-S2; • 22.4-EVO versions earlier than 22.4R3; • 23.2-EVO versions earlier than 23.2R2.
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-S9; From 21.2 · fixed in 21.2R3-S7; From 21.3 · fixed in 21.3R3-S6; From 21.4 · fixed in 21.4R3-S6; From 22.1 · fixed in 22.1R3-S4; From 22.2 · fixed in 22.2R3-S3; From 22.3 · fixed in 22.3R3-S2; From 22.4 · fixed in 22.4R3; From 23.2 · fixed in 23.2R2
- Juniper Networks Junos OS Evolved
fixed in 21.2R3-S7-EVO; From 21.3-EVO · fixed in 21.3R3-S5-EVO; From 21.4-EVO · fixed in 21.4R3-S8-EVO; From 22.1-EVO · fixed in 22.1R3-S4-EVO; From 22.2-EVO · fixed in 22.2R3-S3-EVO; From 22.3-EVO · fixed in 22.3R3-S2-EVO; From 22.4-EVO · fixed in 22.4R3-EVO; From 23.2-EVO · fixed in 23.2R2-EVO; From 23.4-EVO · fixed in 23.4R1-EVO