CVE-2019-0068: Junos OS: SRX Series: Denial of Service vulnerability in flowd due to multicast packets

Published Oct 9, 2019

Updated

The SRX flowd process, responsible for packet forwarding, may crash and restart when processing specific multicast packets. By continuously sending the specific multicast packets, an attacker can repeatedly crash the flowd process causing a sustained Denial of Service. This issue affects Juniper Networks Junos OS on SRX Series: 12.3X48 versions prior to 12.3X48-D90; 15.1X49 versions prior to 15.1X49-D180; 17.3 versions; 17.4 versions prior to 17.4R2-S5, 17.4R3; 18.1 versions prior to 18.1R3-S6; 18.2 versions prior to 18.2R2-S4, 18.2R3; 18.3 versions prior to 18.3R2-S1, 18.3R3; 18.4 versions prior to 18.4R2; 19.1 versions prior to 19.1R1-S1, 19.1R2.

Affected Software

109 affected components

Juniper Junos=12.3x48-d10

Juniper Junos=12.3x48-d15

Juniper Junos=12.3x48-d20

Juniper Junos=12.3x48-d25

Juniper Junos=12.3x48-d30

Juniper Junos=12.3x48-d35

Juniper Junos=12.3x48-d40

Juniper Junos=12.3x48-d45

Juniper Junos=12.3x48-d50

Juniper Junos=12.3x48-d55

Juniper Junos=12.3x48-d60

Juniper Junos=12.3x48-d65

Juniper Junos=12.3x48-d70

Juniper Junos=12.3x48-d75

Juniper Junos=12.3x48-d80

Juniper Junos=12.3x48-d85

Juniper cSRX

Juniper SRX100

Juniper SRX110

Juniper SRX1400

Juniper SRX1500

Juniper SRX210

Juniper SRX220

Juniper SRX240

Juniper SRX300

Juniper SRX320

Juniper SRX340

Juniper SRX3400

Juniper SRX345

Juniper SRX3600

Juniper SRX4100

Juniper SRX4200

Juniper SRX4600

Juniper SRX5400

Juniper SRX550

Juniper Srx550 Hm

Juniper SRX5600

Juniper SRX5800

Juniper SRX650

Juniper vSRX

Juniper Junos=15.1x49-d10

Juniper Junos=15.1x49-d100

Juniper Junos=15.1x49-d110

Juniper Junos=15.1x49-d120

Juniper Junos=15.1x49-d130

Juniper Junos=15.1x49-d140

Juniper Junos=15.1x49-d150

Juniper Junos=15.1x49-d160

Juniper Junos=15.1x49-d170

Juniper Junos=15.1x49-d20

Juniper Junos=15.1x49-d30

Juniper Junos=15.1x49-d35

Juniper Junos=15.1x49-d40

Juniper Junos=15.1x49-d45

Juniper Junos=15.1x49-d50

Juniper Junos=15.1x49-d55

Juniper Junos=15.1x49-d60

Juniper Junos=15.1x49-d65

Juniper Junos=15.1x49-d70

Juniper Junos=15.1x49-d75

Juniper Junos=15.1x49-d80

Juniper Junos=15.1x49-d90

Juniper Junos=17.3

Juniper Junos=17.3-r2

Juniper Junos=17.3-r2-s1

Juniper Junos=17.3-r2-s2

Juniper Junos=17.3-r3-s1

Juniper Junos=17.3-r3-s2

Juniper Junos=17.3-r3-s3

Juniper Junos=17.3-r3-s4

Juniper Junos=17.3-r3-s5

Juniper Junos=17.3-r3-s6

Juniper Junos=17.4

Juniper Junos=17.4-r1

Juniper Junos=17.4-r1-s1

Juniper Junos=17.4-r1-s2

Juniper Junos=17.4-r1-s4

Juniper Junos=17.4-r2

Juniper Junos=17.4-r2-s1

Juniper Junos=17.4-r2-s3

Juniper Junos=17.4-r2-s4

Juniper Junos=18.1

Juniper Junos=18.1-r2

Juniper Junos=18.1-r2-s1

Juniper Junos=18.1-r2-s2

Juniper Junos=18.1-r2-s4

Juniper Junos=18.1-r3

Juniper Junos=18.1-r3-s2

Juniper Junos=18.1-r3-s3

Juniper Junos=18.1-r3-s4

Juniper Junos=18.1-r3-s5

Juniper Junos=18.2

Juniper Junos=18.2-r1-s5

Juniper Junos=18.2-r2-s1

Juniper Junos=18.2-r2-s2

Juniper Junos=18.2-r2-s3

Juniper Junos=18.3

Juniper Junos=18.3-r1

Juniper Junos=18.3-r1-s1

Juniper Junos=18.3-r1-s2

Juniper Junos=18.3-r1-s3

Juniper Junos=18.3-r2

Juniper Junos=18.4

Juniper Junos=18.4-r1

Juniper Junos=18.4-r1-s2

Juniper Junos=18.4-r1-s3

Juniper Junos=18.4-r1-s4

Juniper Junos=19.1

Juniper Junos=19.1-r1

Remediation

Information

The following software releases have been updated to resolve this specific issue: 12.3X48-D90, 15.1X49-D180, 17.4R2-S5, 17.4R3, 18.1R3-S6, 18.2R2-S4, 18.2R3, 18.3R2-S1, 18.3R3, 18.4R2, 19.1R1-S1, 19.1R2, 19.2R1, and all subsequent releases.

Event History

Oct 9, 2019

CVE Published

via MITRE·07:26 PM

Data Sourced

via MITRE·07:26 PM

RemedyDescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2019-0068?

CVE-2019-0068 is classified as a high severity vulnerability due to its potential to cause a sustained Denial of Service.

How do I fix CVE-2019-0068?

To remediate CVE-2019-0068, you should apply the appropriate patches or updates provided by Juniper for affected JUNOS versions.

What products are affected by CVE-2019-0068?

CVE-2019-0068 affects various versions of Juniper JUNOS including 12.3x48 and 15.1x49, among others.

What is the impact of CVE-2019-0068?

The impact of CVE-2019-0068 is that attackers can exploit this vulnerability to repeatedly crash the SRX flowd process, leading to a denial of service.

Is CVE-2019-0068 exploitable remotely?

Yes, CVE-2019-0068 can be exploited remotely by sending specific multicast packets to the affected devices.