Junos OS: SRX 300 Series: Specific link local traffic causes a control plane overload
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 21.2R3-S6, 22.1R3-S4, 22.2R3-S2, 22.3R3-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 Exposure of Resource to Wrong Sphere vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX 300 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). Specific valid link-local traffic is not blocked on ports in STP blocked state but is instead sent to the control plane of the device. This leads to excessive resource consumption and in turn severe impact on all control and management protocols of the device. This issue affects Juniper Networks Junos OS: • 21.2 version 21.2R3-S3 and later versions earlier than 21.2R3-S6; • 22.1 version 22.1R3 and later versions earlier than 22.1R3-S4; • 22.2 version 22.2R2 and later versions earlier than 22.2R3-S2; • 22.3 version 22.3R2 and later versions earlier than 22.3R3-S1; • 22.4 versions earlier than 22.4R2-S2, 22.4R3; • 23.2 versions earlier than 23.2R1-S1, 23.2R2. This issue does not affect Juniper Networks Junos OS 21.4R1 and later versions of 21.4.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Juniper Networks Junos OS
From 21.2R3-S3 · fixed in 21.2R3-S6; From 22.1R3 · fixed in 22.1R3-S4; From 22.2R2 · fixed in 22.2R3-S2; From 22.3R2 · fixed in 22.3R3-S1