Description (CNA)
An Improper Check or Handling of Exceptional Conditions vulnerability in the Layer-2 control protocols daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a Denial of Service (DoS). When a malformed LLDP packet is received, l2cpd will crash and restart. The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, MSTP or VSTP), and MVRP and ERP. Also, if any services depend on LLDP state (like PoE or VoIP device recognition), then these will also be affected. Continued receipt of such packets will lead to a sustained Denial of Service. This issue affects: Juniper Networks Junos OS 21.4 versions prior to 21.4R3-S3; 22.1 versions prior to 22.1R3-S3; 22.2 versions prior to 22.2R2-S1, 22.2R3; 22.3 versions prior to 22.3R2. Juniper Networks Junos OS Evolved 21.4-EVO versions prior to 21.4R3-S2-EVO; 22.1-EVO versions prior to 22.1R3-S3-EVO; 22.2-EVO versions prior to 22.2R2-S1-EVO, 22.2R3-EVO; 22.3-EVO versions prior to 22.3R2-EVO.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Juniper Networks / Junos OS | affected 21.4 before 21.4R3-S3; affected 22.1 before 22.1R3-S3; affected 22.2 before 22.2R2-S1, 22.2R3; affected 22.3 before 22.3R2 |
| Juniper Networks / Junos OS Evolved | affected 21.4 before 21.4R3-S2-EVO; affected 22.1 before 22.1R3-S3-EVO; affected 22.2 before 22.2R2-S1-EVO, 22.2R3-EVO; affected 22.3 before 22.3R2-EVO |
CWE
CWE-703
References
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.