Junos OS: QFX5000 Series and EX Series: Specific malformed LACP packets will cause flaps
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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-S8, 21.2R3-S6, 21.4R3-S4, 22.1R3-S3, 22.2R3-S1
- 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 Isolation or Compartmentalization vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on QFX5000 Series and EX Series allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). If a specific malformed LACP packet is received by a QFX5000 Series, or an EX4400, EX4100 or EX4650 Series device, an LACP flap will occur resulting in traffic loss. This issue affects Junos OS on QFX5000 Series, and on EX4400, EX4100 or EX4650 Series: • 20.4 versions from 20.4R3-S4 before 20.4R3-S8, • 21.2 versions from 21.2R3-S2 before 21.2R3-S6, • 21.4 versions from 21.4R2 before 21.4R3-S4, • 22.1 versions from 22.1R2 before 22.1R3-S3, • 22.2 versions before 22.2R3-S1, • 22.3 versions before 22.3R2-S2, 22.3R3, • 22.4 versions before 22.4R2-S1, 22.4R3.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Juniper Networks Junos OS
From 20.4R3-S4 · fixed in 20.4R3-S8; From 21.2R3-S2 · fixed in 21.2R3-S6; From 21.4R2 · fixed in 21.4R3-S4; From 22.1R2 · fixed in 22.1R3-S3; From 22.2 · fixed in 22.2R3-S1