Junos OS: EX4300 Series: High CPU load due to receipt of specific IPv4 packets
Published Oct 16, 2020
6.5
MEDIUMCVSS 3.1
EPSS 0.53%
Description
On Juniper Networks EX4300 Series, receipt of a stream of specific IPv4 packets can cause Routing Engine (RE) high CPU load, which could lead to network protocol operation issue and traffic interruption. This specific packets can originate only from within the broadcast domain where the device is connected. This issue occurs when the packets enter to the IRB interface. Only IPv4 packets can trigger this issue. IPv6 packets cannot trigger this issue. This issue affects Juniper Networks Junos OS on EX4300 series: 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S11, 17.4R3-S2; 18.1 versions prior to 18.1R3-S10; 18.2 versions prior to 18.2R3-S4; 18.3 versions prior to 18.3R2-S4, 18.3R3-S2; 18.4 versions prior to 18.4R2-S4, 18.4R3-S2; 19.1 versions prior to 19.1R2-S2, 19.1R3-S1; 19.2 versions prior to 19.2R1-S5, 19.2R2-S1, 19.2R3; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2; 20.1 versions prior to 20.1R1-S3, 20.1R2.
Affected products
-
- Version 17.3StatusaffectedConstraints<17.3R3-S9
- Version 17.4StatusaffectedConstraints<17.4R2-S11, 17.4R3-S2
- Version 18.1StatusaffectedConstraints<18.1R3-S10
- Version 18.2StatusaffectedConstraints<18.2R3-S4
- Version 18.3StatusaffectedConstraints<18.3R2-S4, 18.3R3-S2
- Version 18.4StatusaffectedConstraints<18.4R2-S4, 18.4R3-S2
- Version 19.1StatusaffectedConstraints<19.1R2-S2, 19.1R3-S1
- Version 19.2StatusaffectedConstraints<19.2R1-S5, 19.2R2-S1, 19.2R3
- Version 19.3StatusaffectedConstraints<19.3R2-S4, 19.3R3
- Version 19.4StatusaffectedConstraints<19.4R1-S3, 19.4R2
- Version 20.1StatusaffectedConstraints<20.1R1-S3, 20.1R2
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS | n/a |
|
- 17.3
- 17.3
- 17.3
- 17.3
- 17.3
- 17.3
- 17.3
- 17.3
- 17.3
- 17.3
- 17.3
- 17.3
- 17.3
- 17.3
- 17.3
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.2
- 19.2
- 19.2
- 19.2
- 19.2
- 19.2
- 19.2
- 19.3
- 19.3
- 19.3
- 19.3
- 19.3
- 19.3
- 19.3
- 19.4
- 19.4
- 19.4
- 20.1
- 20.1
- 20.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
The following software releases have been updated to resolve this specific issue: 17.3R3-S9, 17.4R2-S11, 17.4R3-S2, 18.1R3-S10, 18.2R3-S4, 18.3R2-S4, 18.3R3-S2, 18.4R2-S4, 18.4R3-S2, 19.1R2-S2, 19.1R3-S1, 19.2R1-S5, 19.2R2-S1, 19.2R3, 19.3R2-S4, 19.3R3, 19.4R1-S3, 19.4R2, 20.1R1-S3, 20.1R2, 20.2R1 and all subsequent releases.
References (3)
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-12532 Advisory
- https://kb.juniper.net/ x_refsource_MISCVendor Advisory
- https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11067&actp=SUBSCRIPTION Vendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-12532 | Advisory | |
| https://kb.juniper.net/ | x_refsource_MISCVendor Advisory | |
| https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11067&actp=SUBSCRIPTION | Vendor Advisory |
Change history (0)
No recorded changes yet.