Junos OS: EX2300 and EX3400: High disk I/O operations may disrupt the communication between RE and PFE
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
On EX2300 and EX3400 series, high disk I/O operations may disrupt the communication between the routing engine (RE) and the packet forwarding engine (PFE). In a virtual chassis (VC) deployment, this issue disrupts communication between the VC members. This issue does not affect other Junos platforms. Affected releases are Junos OS on EX2300 and EX3400 series: 15.1X53 versions prior to 15.1X53-D590; 18.1 versions prior to 18.1R2-S2, 18.1R3; 18.2 versions prior to 18.2R2.
Why it matters now
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 | 15.1X53 to before 15.1X53-D113, 15.1X53-D590; 18.1 to before 18.1R2-S2, 18.1R3; 18.2 to before 18.2R2 | 15.1X53-D113, 15.1X53-D590, 18.1R2-S2, 18.1R3, 18.2R2 | Patch available | CNA |
- Junos OS VendorJuniper Affected 15.1X53 to before 15.1X53-D113, 15.1X53-D590; 18.1 to before 18.1R2-S2, 18.1R3; 18.2 to before 18.2R2 Fixed in 15.1X53-D113, 15.1X53-D590, 18.1R2-S2, 18.1R3, 18.2R2 Patch available CNA
CPE configurations NVD · 12
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:juniper:junos:15.1x53:d50:*:*:*:*:*:* | 15.1x53 d50 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:15.1x53:d51:*:*:*:*:*:* | 15.1x53 d51 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:15.1x53:d52:*:*:*:*:*:* | 15.1x53 d52 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:15.1x53:d55:*:*:*:*:*:* | 15.1x53 d55 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:15.1x53:d57:*:*:*:*:*:* | 15.1x53 d57 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:15.1x53:d58:*:*:*:*:*:* | 15.1x53 d58 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:15.1x53:d59:*:*:*:*:*:* | 15.1x53 d59 | Vulnerable | Juniper |
| cpe:2.3:h:juniper:ex2300:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:ex3400:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:o:juniper:junos:18.1:-:*:*:*:*:*:* | 18.1 | Vulnerable | Juniper |
- cpe:2.3:o:juniper:junos:15.1x53:d50:*:*:*:*:*:* Versions 15.1x53 d50 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:15.1x53:d51:*:*:*:*:*:* Versions 15.1x53 d51 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:15.1x53:d52:*:*:*:*:*:* Versions 15.1x53 d52 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:15.1x53:d55:*:*:*:*:*:* Versions 15.1x53 d55 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:15.1x53:d57:*:*:*:*:*:* Versions 15.1x53 d57 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:15.1x53:d58:*:*:*:*:*:* Versions 15.1x53 d58 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:15.1x53:d59:*:*:*:*:*:* Versions 15.1x53 d59 Vulnerable ·Juniper
- cpe:2.3:h:juniper:ex2300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:ex3400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:o:juniper:junos:18.1:-:*:*:*:*:*:* Versions 18.1 Vulnerable ·Juniper
Remediation
- Fix · CNA Junos OS (Juniper Networks) Fixed in 15.1X53-D113, 15.1X53-D590, 18.1R2-S2, 18.1R3, 18.2R2
Timeline
- 2026-10-02 Threatist record created from CVE-2019-0009
- 2026-10-03 Alias added: GHSA-29c6-mr8r-mfmj
References
Advisory 1
More Juniper Junos vulnerabilities
- TI-2023-18638 Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to… KEVCVSS 3.1CRITICAL 9.8
- TI-2020-01585 Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services KEVCVSS 3.1CRITICAL 9.8
- TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
- TI-2025-15550 Junos OS: An local attacker with shell access can execute arbitrary code KEVCVSS 4.0MEDIUM 6.7
- TI-2023-18644 Junos OS: SRX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload and download arbitrary files KEVCVSS 3.1MEDIUM 5.3
- TI-2023-18640 Junos OS: EX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload arbitrary files KEVCVSS 3.1MEDIUM 5.3
Sources
- CVE-2019-0009 · CVE Program
- CVE-2019-0009 · NVD
- FIRST EPSS
- GHSA-29c6-mr8r-mfmj · GitHub Advisory Database · CC BY 4.0
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