Description
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).When processing a high rate of specific GRE traffic destined to the device, the respective PFE will hang causing traffic forwarding to stop. When this issue occurs the following logs can be observed: <fpc #> MQSS(0): LI-3: Received a parcel with more than 512B accompanying data CHASSISD_FPC_ASIC_ERROR: ASIC Error detected <...> This issue affects Junos OS: * all versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S8, * 22.2 versions before 22.2R3-S4, * 22.4 versions before 22.4R3-S5, * 23.2 versions before 23.2R2-S2, * 23.4 versions before 23.4R2.
Problem types
CWE-754 Improper Check for Unusual or Exceptional Conditions
Product status
Any version before 21.2R3-S9
21.4 (semver) before 21.4R3-S8
22.2 (semver) before 22.2R3-S4
22.4 (semver) before 22.4R3-S5
23.2 (semver) before 23.2R2-S2
23.4 (semver) before 23.4R2
Timeline
| 2025-04-09: | Initial Publication |
References
supportportal.juniper.net/JSA96471