Junos OS: QFX5k: l2 loop in the overlay impacts the stability in a EVPN/VXLAN environment
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 20.2R3-S6, 20.3R3-S5, 20.4R3-S5, 21.1R3-S4, 21.2R3-S3, and 4 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 Improperly Implemented Security Check for Standard vulnerability in storm control of Juniper Networks Junos OS QFX5k devices allows packets to be punted to ARP queue causing a l2 loop resulting in a DDOS violations and DDOS syslog. This issue is triggered when Storm control is enabled and ICMPv6 packets are present on device. This issue affects Juniper Networks: Junos OS • All versions prior to 20.2R3-S6 on QFX5k; • 20.3 versions prior to 20.3R3-S5 on QFX5k; • 20.4 versions prior to 20.4R3-S5 on QFX5k; • 21.1 versions prior to 21.1R3-S4 on QFX5k; • 21.2 versions prior to 21.2R3-S3 on QFX5k; • 21.3 versions prior to 21.3R3-S2 on QFX5k; • 21.4 versions prior to 21.4R3 on QFX5k; • 22.1 versions prior to 22.1R3 on QFX5k; • 22.2 versions prior to 22.2R2 on QFX5k.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Juniper Networks Junos OS
fixed in 20.2R3-S6; From 20.3 · fixed in 20.3R3-S5; From 20.4 · fixed in 20.4R3-S5; From 21.1 · fixed in 21.1R3-S4; From 21.2 · fixed in 21.2R3-S3; From 21.3 · fixed in 21.3R3-S2; From 21.4 · fixed in 21.4R3; From 22.1 · fixed in 22.1R3; From 22.2 · fixed in 22.2R2