Junos OS: MX Series: An MPC10 Denial of Service (DoS) due to OSPF states transitioning to…
Priority LOW 36CWE-410Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
This issue only affects devices with three (3) or more MPC10's installed in a single chassis with OSPF enabled and configured on the device. An Insufficient Resource Pool weakness allows an attacker to cause the device's Open Shortest Path First (OSPF) states to transition to Down, resulting in a Denial of Service (DoS) attack. This attack requires a relatively large number of specific Internet Mixed (IMIXed) types of genuine and valid IPv6 packets to be transferred by the attacker in a relatively short period of time, across three or more PFE's on the device at the same time. Continued receipt of the traffic sent by the attacker will continue to cause OSPF to remain in the Down starting state, or flap between other states and then again to Down, causing a persistent Denial of Service. This attack will affect all IPv4, and IPv6 traffic served by the OSPF routes once the OSPF states transition to Down. This issue affects: Juniper Networks Junos OS on MX480, MX960, MX2008, MX2010, MX2020: 18.1 versions prior to 18.1R2-S4, 18.1R3-S5; 18.1X75 version 18.1X75-D10 and later versions; 18.2 versions prior to 18.2R1-S5, 18.2R2-S3, 18.2R3; 18.2X75 versions prior to 18.2X75-D50; 18.3 versions prior to 18.3R1-S4, 18.3R2, 18.3R3; 18.4 versions prior to 18.4R1-S2, 18.4R2.
Why it matters now
EPSS 0.0132 71st percentileScored 2026-11-07
Fix Fixed Junos OS (Juniper Networks): 18.1R2-S4, 18.1R3-S5, 18.2R1-S5 +8
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Juniper | Junos OS | 18.1 to before 18.1R2-S4, 18.1R3-S5; 18.2 to before 18.2R1-S5, 18.2R2-S3, 18.2R3; 18.2X75 to before 18.2X75-D50; 18.3 to before 18.3R1-S4, 18.3R2, 18.3R3; 18.4 to before 18.4R1-S2, 18.4R2; 18.1X75-D10 and later | 18.1R2-S4, 18.1R3-S5, 18.2R1-S5, 18.2R2-S3, 18.2R3, 18.2X75-D50, 18.3R1-S4, 18.3R2, 18.3R3, 18.4R1-S2, 18.4R2 | Patch available | CNA |
- Junos OS VendorJuniper Affected 18.1 to before 18.1R2-S4, 18.1R3-S5; 18.2 to before 18.2R1-S5, 18.2R2-S3, 18.2R3; 18.2X75 to before 18.2X75-D50; 18.3 to before 18.3R1-S4, 18.3R2, 18.3R3; 18.4 to before 18.4R1-S2, 18.4R2; 18.1X75-D10 and later Fixed in 18.1R2-S4, 18.1R3-S5, 18.2R1-S5, 18.2R2-S3, 18.2R3, 18.2X75-D50, 18.3R1-S4, 18.3R2, 18.3R3, 18.4R1-S2, 18.4R2 Patch available CNA
CPE configurations NVD · 27
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:juniper:junos:18.1:-:*:*:*:*:*:* | 18.1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:r2:*:*:*:*:*:* | 18.1 r2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:r2-s1:*:*:*:*:*:* | 18.1 r2-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:r2-s2:*:*:*:*:*:* | 18.1 r2-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:r3:*:*:*:*:*:* | 18.1 r3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:r3-s2:*:*:*:*:*:* | 18.1 r3-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:r3-s3:*:*:*:*:*:* | 18.1 r3-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:r3-s4:*:*:*:*:*:* | 18.1 r3-s4 | Vulnerable | Juniper |
| cpe:2.3:h:juniper:mx2008:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:mx2010:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
- cpe:2.3:o:juniper:junos:18.1:-:*:*:*:*:*:* Versions 18.1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:r2:*:*:*:*:*:* Versions 18.1 r2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:r2-s1:*:*:*:*:*:* Versions 18.1 r2-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:r2-s2:*:*:*:*:*:* Versions 18.1 r2-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:r3:*:*:*:*:*:* Versions 18.1 r3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:r3-s2:*:*:*:*:*:* Versions 18.1 r3-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:r3-s3:*:*:*:*:*:* Versions 18.1 r3-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:r3-s4:*:*:*:*:*:* Versions 18.1 r3-s4 Vulnerable ·Juniper
- cpe:2.3:h:juniper:mx2008:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:mx2010:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
Show 17 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:juniper:mx2020:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:o:juniper:junos:18.1x75:d10:*:*:*:*:*:* | 18.1x75 d10 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:-:*:*:*:*:*:* | 18.2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r2-s1:*:*:*:*:*:* | 18.2 r2-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r2-s2:*:*:*:*:*:* | 18.2 r2-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2x75:-:*:*:*:*:*:* | 18.2x75 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2x75:d20:*:*:*:*:*:* | 18.2x75 d20 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2x75:d40:*:*:*:*:*:* | 18.2x75 d40 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:-:*:*:*:*:*:* | 18.3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1:*:*:*:*:*:* | 18.3 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1-s1:*:*:*:*:*:* | 18.3 r1-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1-s2:*:*:*:*:*:* | 18.3 r1-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1-s3:*:*:*:*:*:* | 18.3 r1-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:-:*:*:*:*:*:* | 18.4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:* | 18.4 r1 | Vulnerable | Juniper |
- cpe:2.3:h:juniper:mx2020:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:o:juniper:junos:18.1x75:d10:*:*:*:*:*:* Versions 18.1x75 d10 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:-:*:*:*:*:*:* Versions 18.2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r2-s1:*:*:*:*:*:* Versions 18.2 r2-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r2-s2:*:*:*:*:*:* Versions 18.2 r2-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2x75:-:*:*:*:*:*:* Versions 18.2x75 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2x75:d20:*:*:*:*:*:* Versions 18.2x75 d20 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2x75:d40:*:*:*:*:*:* Versions 18.2x75 d40 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:-:*:*:*:*:*:* Versions 18.3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1:*:*:*:*:*:* Versions 18.3 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1-s1:*:*:*:*:*:* Versions 18.3 r1-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1-s2:*:*:*:*:*:* Versions 18.3 r1-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1-s3:*:*:*:*:*:* Versions 18.3 r1-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:-:*:*:*:*:*:* Versions 18.4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:* Versions 18.4 r1 Vulnerable ·Juniper
Remediation
- Fix · CNA Junos OS (Juniper Networks) Fixed in 18.1R2-S4, 18.1R3-S5, 18.2R1-S5, 18.2R2-S3, 18.2R3, 18.2X75-D50, 18.3R1-S4, 18.3R2, 18.3R3, 18.4R1-S2, 18.4R2
Timeline
- 2026-10-02 Threatist record created from CVE-2019-0056
- 2026-10-03 Alias added: GHSA-mjmc-mxc5-2f3v
References
Advisory 1
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Sources
- CVE-2019-0056 · CVE Program
- CVE-2019-0056 · NVD
- FIRST EPSS
- GHSA-mjmc-mxc5-2f3v · GitHub Advisory Database · CC BY 4.0
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