QFX5000 Series, EX4300, EX4600: A stack buffer overflow vulnerability in Packet Forwarding Engine manager (FXPC) process
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.
Summary
A certain sequence of valid BGP or IPv6 BFD packets may trigger a stack based buffer overflow in the Junos OS Packet Forwarding Engine manager (FXPC) process on QFX5000 series, EX4300, EX4600 devices. This issue can result in a crash of the fxpc daemon or may potentially lead to remote code execution. Affected releases are Juniper Networks Junos OS on QFX 5000 series, EX4300, EX4600 are: 14.1X53; 15.1X53 versions prior to 15.1X53-D235; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R3; 17.3 versions prior to 17.3R3-S2, 17.3R4; 17.4 versions prior to 17.4R2-S1, 17.4R3; 18.1 versions prior to 18.1R3-S1, 18.1R4; 18.2 versions prior to 18.2R2; 18.2X75 versions prior to 18.2X75-D30; 18.3 versions prior to 18.3R2.
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 | 14.1X53; 15.1X53 to before 15.1X53-D235; 17.1 to before 17.1R3; 18.1 to before 18.1R3-S1, 18.1R4; 18.2 to before 18.2R2; 18.3 to before 18.3R2 | 15.1X53-D235, 17.1R3, 18.1R3-S1, 18.1R4, 18.2R2, 18.3R2 | Patch available | CNA |
| Juniper | Junos OS | 17.2 to before 17.2R3; 17.3 to before 17.3R3-S2, 17.3R4; 17.4 to before 17.4R2-S1, 17.4R3 | 17.2R3, 17.3R3-S2, 17.3R4, 17.4R2-S1, 17.4R3 | Patch available | CNA |
| Juniper | Junos OS | 18.2X75 to before 18.2X75-D30 | 18.2X75-D30 | Patch available | CNA |
- Junos OS VendorJuniper Affected 14.1X53; 15.1X53 to before 15.1X53-D235; 17.1 to before 17.1R3; 18.1 to before 18.1R3-S1, 18.1R4; 18.2 to before 18.2R2; 18.3 to before 18.3R2 Fixed in 15.1X53-D235, 17.1R3, 18.1R3-S1, 18.1R4, 18.2R2, 18.3R2 Patch available CNA
- Junos OS VendorJuniper Affected 17.2 to before 17.2R3; 17.3 to before 17.3R3-S2, 17.3R4; 17.4 to before 17.4R2-S1, 17.4R3 Fixed in 17.2R3, 17.3R3-S2, 17.3R4, 17.4R2-S1, 17.4R3 Patch available CNA
- Junos OS VendorJuniper Affected 18.2X75 to before 18.2X75-D30 Fixed in 18.2X75-D30 Patch available CNA
CPE configurations NVD · 15
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | 15.1x53 to before 15.1x53-d235; 17.1 to before 17.1r3; 17.2 to before 17.2r3; 17.3 to before 17.3r3-s2; 17.4 to before 17.4r2-s1; 18.1 to before 18.1r3-s1; 18.2 to before 18.2r2; 18.2x75 to before 18.2x75-d30; 18.3 to before 18.3r2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:14.1x53:*:*:*:*:*:*:* | 14.1x53 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:17.3:*:*:*:*:*:*:* | 17.3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:17.4:*:*:*:*:*:*:* | 17.4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:*:*:*:*:*:*:* | 18.1 | Vulnerable | Juniper |
| cpe:2.3:h:juniper:ex4300:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:ex4300m:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:ex4600:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:ex4650:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:qfx5100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
- cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* Versions 15.1x53 to before 15.1x53-d235; 17.1 to before 17.1r3; 17.2 to before 17.2r3; 17.3 to before 17.3r3-s2; 17.4 to before 17.4r2-s1; 18.1 to before 18.1r3-s1; 18.2 to before 18.2r2; 18.2x75 to before 18.2x75-d30; 18.3 to before 18.3r2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:14.1x53:*:*:*:*:*:*:* Versions 14.1x53 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:17.3:*:*:*:*:*:*:* Versions 17.3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:17.4:*:*:*:*:*:*:* Versions 17.4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:*:*:*:*:*:*:* Versions 18.1 Vulnerable ·Juniper
- cpe:2.3:h:juniper:ex4300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:ex4300m:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:ex4600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:ex4650:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:qfx5100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
Show 5 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:juniper:qfx5110:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:qfx5120:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:qfx5200-32c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:qfx5200-48y:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:qfx5210-64c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
- cpe:2.3:h:juniper:qfx5110:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:qfx5120:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:qfx5200-32c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:qfx5200-48y:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:qfx5210-64c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
Remediation
- Fix · CNA Junos OS (Juniper Networks) Fixed in 15.1X53-D235, 17.1R3, 18.1R3-S1, 18.1R4, 18.2R2, 18.3R2
- Fix · CNA Junos OS (Juniper Networks) Fixed in 17.2R3, 17.3R3-S2, 17.3R4, 17.4R2-S1, 17.4R3
- Fix · CNA Junos OS (Juniper Networks) Fixed in 18.2X75-D30
Timeline
- 2026-10-02 Threatist record created from CVE-2019-0008
- 2026-10-03 Alias added: GHSA-w8p6-5qfp-c66p
References
Advisory 1
More Juniper Junos vulnerabilities
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- 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-2019-0008 · CVE Program
- CVE-2019-0008 · NVD
- FIRST EPSS
- GHSA-w8p6-5qfp-c66p · GitHub Advisory Database · CC BY 4.0
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