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 malicious user 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 before 21.4R3-S3; 22.1 versions before 22.1R3-S3; 22.2 versions before 22.2R2-S1, 22.2R3; 22.3 versions before 22.3R2. Juniper Networks Junos OS Evolved 21.4-EVO versions before 21.4R3-S2-EVO; 22.1-EVO versions before 22.1R3-S3-EVO; 22.2-EVO versions before 22.2R2-S1-EVO, 22.2R3-EVO; 22.3-EVO versions before 22.3R2-EVO.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
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juniper junos 21.4 |
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juniper junos 22.1 |
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juniper junos 22.2 |
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juniper junos 22.3 |
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juniper junos os evolved 21.4 |
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juniper junos os evolved 22.1 |
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juniper junos os evolved 22.2 |
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juniper junos os evolved 22.3 |
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