Description (CNA)
A Missing Synchronization vulnerability in the flow collector handler of Juniper Networks Junos OS Evolved on QFX Series allows an adjacent, unauthenticated attacker to cause a Denial-of-Service (DoS). When the reachability of an sFlow collector changes, the corresponding next-hop entry is updated. If this update occurs simultaneously with the sFlow thread accessing the next-hop data (which is outside the attackers control), it causes the evo-pfemand process to crash, impacting all traffic forwarding until the automatic process restart has completed. This issue affects Junos OS Evolved on QFX Series: * all 23.2 versions, * 23.4 versions before 23.4R2-S7-EVO, * 24.2 versions before 24.2R2-S5-EVO, * 24.4 versions before 24.4R2-S3-EVO, * 25.2 versions before 25.2R2-EVO.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Juniper Networks / Junos OS Evolved | affected 0 before 23.4R2-S7-EVO; affected 24.2 before 24.2R2-S5-EVO; affected 24.4 before 24.4R2-S3-EVO; affected 25.2 before 25.2R2-EVO |
CWE
CWE-820
References
ADP enrichment
No English description supplied.
No references supplied.