Junos OS Evolved: ACX 7000 Series: Receipt of specific transit MPLS packets causes resources to be exhausted
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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-S9-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-S2-EVO, 23.2R2-EVO
- 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 Restriction of Communication Channel to Intended Endpoints vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows an unauthenticated, network based attacker to cause increased consumption of resources, ultimately resulting in a Denial of Service (DoS). When specific transit MPLS packets are received by the PFE, these packets are internally forwarded to the Routing Engine (RE), rather than being handled appropriately. Continuous receipt of these MPLS packets causes resources to be exhausted. MPLS config is not required to be affected by this issue. This issue affects Junos OS Evolved ACX 7000 Series: • All versions before 21.4R3-S9-EVO, • 22.2-EVO before 22.2R3-S4-EVO, • 22.3-EVO before 22.3R3-S3-EVO, • 22.4-EVO before 22.4R3-S2-EVO, • 23.2-EVO before 23.2R2-EVO, • 23.4-EVO before 23.4R1-S1-EVO, 23.4R2-EVO.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Juniper Networks Junos OS Evolved
fixed in 21.4R3-S9-EVO; From 22.2-EVO · fixed in 22.2R3-S4-EVO; From 22.3-EVO · fixed in 22.3R3-S3-EVO; From 22.4-EVO · fixed in 22.4R3-S2-EVO; From 23.2-EVO · fixed in 23.2R2-EVO