Junos OS and Junos OS Evolved: A specific BGP UPDATE message will cause a crash in the backup Routing Engine in NSR-enabled devices
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 8 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
A Heap-based Buffer Overflow vulnerability in the Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network based attacker to cause a Denial of Service (DoS). If an attacker sends a specific BGP UPDATE message to the device, this will cause a memory overwrite and therefore an RPD crash and restart in the backup Routing Engine (RE). Continued receipt of these packets will cause a sustained Denial of Service (DoS) condition in the backup RE. The primary RE is not impacted by this issue and there is no impact on traffic. This issue only affects devices with NSR enabled. Note: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability. This issue requires an attacker to have an established BGP session to a system affected by the issue. This issue affects both eBGP and iBGP implementations. 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-S5; • 22.1 versions earlier than 22.1R3-S4; • 22.2 versions earlier than 22.2R3-S2; • 22.3 versions earlier than 22.3R3-S1; • 22.4 versions earlier than 22.4R2-S2, 22.4R3; • 23.1 versions earlier than 23.1R2; • 23.2 versions earlier than 23.2R1-S2, 23.2R2. Juniper Networks Junos OS Evolved • All 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-S2-EVO; • 22.3-EVO versions later than 22.3R1-EVO; • 22.4-EVO versions earlier than 22.4R2-S2-EVO, 22.4R3-EVO; • 23.1-EVO versions earlier than 23.1R2-EVO; • 23.2-EVO versions earlier than 23.2R1-S2-EVO, 23.2R2-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-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-S2; From 22.3 · fixed in 22.3R3-S1; From 23.1 · fixed in 23.1R2
- Juniper Networks Junos OS Evolved
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-S2-EVO; From 23.1-EVO · fixed in 23.1R2-EVO