Junos OS and Junos OS Evolved: A malformed BGP tunnel encapsulation attribute will lead 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 20.4R3-S9, 21.2R3-S7, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, and 11 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 Validation of Syntactic Correctness of Input vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). If a BGP update is received over an established BGP session which contains a tunnel encapsulation attribute with a specifically malformed TLV, rpd will crash and restart. This issue affects Juniper Networks Junos OS: • 20.4 versions 20.4R1 and later 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-S5; • 22.1 versions earlier than 22.1R3-S4; • 22.2 versions earlier than 22.2R3-S3; • 22.3 versions earlier than 22.3R3-S1; • 22.4 versions earlier than 22.4R3; • 23.2 versions earlier than 23.2R1-S2, 23.2R2; Junos OS Evolved: • 20.4-EVO versions 20.4R1-EVO and later versions earlier than 20.4R3-S9-EVO; • 21.2-EVO versions earlier than 21.2R3-S7-EVO; • 21.3-EVO versions earlier than 21.3R3-S5-EVO; • 21.4-EVO versions earlier than 21.4R3-S5-EVO; • 22.1-EVO versions earlier than 22.1R3-S4-EVO; • 22.2-EVO versions earlier than 22.2R3-S3-EVO; • 22.3-EVO versions earlier than 22.3R3-S1-EVO; • 22.4-EVO versions earlier than 22.4R3-EVO; • 23.2-EVO versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO; This issue does not affect Juniper Networks • Junos OS versions earlier than 20.4R1; • Junos OS Evolved versions earlier than 20.4R1-EVO. This is a related but separate issue than the one described in JSA79095.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Juniper Networks Junos OS
From 20.4 · fixed in 20.4R3-S9; From 21.2 · fixed in 21.2R3-S7; From 21.3 · fixed in 21.3R3-S5; From 21.4 · fixed in 21.4R3-S5; From 22.1 · fixed in 22.1R3-S4; From 22.2 · fixed in 22.2R3-S3; From 22.3 · fixed in 22.3R3-S1; From 22.4 · fixed in 22.4R3
- Juniper Networks Junos OS Evolved
From 20.4-EVO · fixed in 20.4R3-S9-EVO; From 21.2-EVO · fixed in 21.2R3-S7-EVO; From 21.3-EVO · fixed in 21.3R3-S5-EVO; From 21.4-EVO · fixed in 21.4R3-S5-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-S1-EVO; From 22.4-EVO · fixed in 22.4R3-EVO