Buffer overflow in Juniper Junos OS
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 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
On Juniper Networks SRX Series with ICAP (Internet Content Adaptation Protocol) redirect service enabled, processing a malformed HTTP message can lead to a Denial of Service (DoS) or Remote Code Execution (RCE) Continued processing of this malformed HTTP message may result in an extended Denial of Service (DoS) condition. The offending HTTP message that causes this issue may originate both from the HTTP server or the HTTP client. This issue affects Juniper Networks Junos OS on SRX Series: 18.1 versions prior to 18.1R3-S9 ; 18.2 versions prior to 18.2R2-S7, 18.2R3-S3; 18.3 versions prior to 18.3R1-S7, 18.3R2-S4, 18.3R3-S1; 18.4 versions prior to 18.4R1-S7, 18.4R2-S4, 18.4R3; 19.1 versions prior to 19.1R1-S5, 19.1R2; 19.2 versions prior to 19.2R1-S2, 19.2R2; 19.3 versions prior to 19.3R2. This issue does not affect Juniper Networks Junos OS prior to 18.1R1.
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 | 18.2 to before 18.2R2-S7, 18.2R3-S3; 18.3 to before 18.3R1-S7, 18.3R2-S4, 18.3R3-S1; 18.4 to before 18.4R1-S7, 18.4R2-S4, 18.4R3; 19.1 to before 19.1R1-S5, 19.1R2; 19.2 to before 19.2R1-S2, 19.2R2; 19.3 to before 19.3R2 | 18.1, 18.2R2-S7, 18.2R3-S3, 18.3R1-S7, 18.3R2-S4, 18.3R3-S1, 18.4R1-S7, 18.4R2-S4, 18.4R3, 19.1R1-S5, 19.1R2, 19.2R1-S2, 19.2R2, 19.3R2 | Patch available | CNA |
- Junos OS VendorJuniper Affected 18.2 to before 18.2R2-S7, 18.2R3-S3; 18.3 to before 18.3R1-S7, 18.3R2-S4, 18.3R3-S1; 18.4 to before 18.4R1-S7, 18.4R2-S4, 18.4R3; 19.1 to before 19.1R1-S5, 19.1R2; 19.2 to before 19.2R1-S2, 19.2R2; 19.3 to before 19.3R2 Fixed in 18.1, 18.2R2-S7, 18.2R3-S3, 18.3R1-S7, 18.3R2-S4, 18.3R3-S1, 18.4R1-S7, 18.4R2-S4, 18.4R3, 19.1R1-S5, 19.1R2, 19.2R1-S2, 19.2R2, 19.3R2 Patch available CNA
CPE configurations NVD · 64
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:juniper:junos:18.1:-:*:*:*:*:*:* | 18.1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:r1:*:*:*:*:*:* | 18.1 r1 | 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:r2-s4:*:*:*:*:*:* | 18.1 r2-s4 | 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-s1:*:*:*:*:*:* | 18.1 r3-s1 | 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:-:*:*:*:*:*:* Versions 18.1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:r1:*:*:*:*:*:* Versions 18.1 r1 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:r2-s4:*:*:*:*:*:* Versions 18.1 r2-s4 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-s1:*:*:*:*:*:* Versions 18.1 r3-s1 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
Show 54 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:juniper:junos:18.1:r3-s4:*:*:*:*:*:* | 18.1 r3-s4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:r3-s6:*:*:*:*:*:* | 18.1 r3-s6 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:r3-s7:*:*:*:*:*:* | 18.1 r3-s7 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.1:r3-s8:*:*:*:*:*:* | 18.1 r3-s8 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:-:*:*:*:*:*:* | 18.2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r1:*:*:*:*:*:* | 18.2 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r1:-:*:*:*:*:* | 18.2 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r1-s3:*:*:*:*:*:* | 18.2 r1-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r1-s4:*:*:*:*:*:* | 18.2 r1-s4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r1-s5:*:*:*:*:*:* | 18.2 r1-s5 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r2:*:*:*:*:*:* | 18.2 r2 | 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:18.2:r2-s3:*:*:*:*:*:* | 18.2 r2-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r2-s4:*:*:*:*:*:* | 18.2 r2-s4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r2-s5:*:*:*:*:*:* | 18.2 r2-s5 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r2-s6:*:*:*:*:*:* | 18.2 r2-s6 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r3:*:*:*:*:*:* | 18.2 r3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r3-s1:*:*:*:*:*:* | 18.2 r3-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.2:r3-s2:*:*:*:*:*:* | 18.2 r3-s2 | 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:18.3:r1-s5:*:*:*:*:*:* | 18.3 r1-s5 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1-s6:*:*:*:*:*:* | 18.3 r1-s6 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r2:*:*:*:*:*:* | 18.3 r2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r2-s1:*:*:*:*:*:* | 18.3 r2-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r2-s2:*:*:*:*:*:* | 18.3 r2-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r2-s3:*:*:*:*:*:* | 18.3 r2-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r3:*:*:*:*:*:* | 18.3 r3 | 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:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:* | 18.4 r1-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:* | 18.4 r1-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:* | 18.4 r1-s5 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1-s6:*:*:*:*:*:* | 18.4 r1-s6 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:* | 18.4 r2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:* | 18.4 r2-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:* | 18.4 r2-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r2-s3:*:*:*:*:*:* | 18.4 r2-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:* | 19.1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:* | 19.1 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:* | 19.1 r1-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:* | 19.1 r1-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:* | 19.1 r1-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:* | 19.1 r1-s4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:* | 19.2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:* | 19.2 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:* | 19.2 r1-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:* | 19.3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:* | 19.3 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.3:r1-s1:*:*:*:*:*:* | 19.3 r1-s1 | Vulnerable | Juniper |
- cpe:2.3:o:juniper:junos:18.1:r3-s4:*:*:*:*:*:* Versions 18.1 r3-s4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:r3-s6:*:*:*:*:*:* Versions 18.1 r3-s6 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:r3-s7:*:*:*:*:*:* Versions 18.1 r3-s7 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.1:r3-s8:*:*:*:*:*:* Versions 18.1 r3-s8 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:-:*:*:*:*:*:* Versions 18.2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r1:*:*:*:*:*:* Versions 18.2 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r1:-:*:*:*:*:* Versions 18.2 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r1-s3:*:*:*:*:*:* Versions 18.2 r1-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r1-s4:*:*:*:*:*:* Versions 18.2 r1-s4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r1-s5:*:*:*:*:*:* Versions 18.2 r1-s5 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r2:*:*:*:*:*:* Versions 18.2 r2 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:18.2:r2-s3:*:*:*:*:*:* Versions 18.2 r2-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r2-s4:*:*:*:*:*:* Versions 18.2 r2-s4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r2-s5:*:*:*:*:*:* Versions 18.2 r2-s5 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r2-s6:*:*:*:*:*:* Versions 18.2 r2-s6 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r3:*:*:*:*:*:* Versions 18.2 r3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r3-s1:*:*:*:*:*:* Versions 18.2 r3-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.2:r3-s2:*:*:*:*:*:* Versions 18.2 r3-s2 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:18.3:r1-s5:*:*:*:*:*:* Versions 18.3 r1-s5 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1-s6:*:*:*:*:*:* Versions 18.3 r1-s6 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r2:*:*:*:*:*:* Versions 18.3 r2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r2-s1:*:*:*:*:*:* Versions 18.3 r2-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r2-s2:*:*:*:*:*:* Versions 18.3 r2-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r2-s3:*:*:*:*:*:* Versions 18.3 r2-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r3:*:*:*:*:*:* Versions 18.3 r3 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
- cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:* Versions 18.4 r1-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:* Versions 18.4 r1-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:* Versions 18.4 r1-s5 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1-s6:*:*:*:*:*:* Versions 18.4 r1-s6 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:* Versions 18.4 r2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:* Versions 18.4 r2-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:* Versions 18.4 r2-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r2-s3:*:*:*:*:*:* Versions 18.4 r2-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:* Versions 19.1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:* Versions 19.1 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:* Versions 19.1 r1-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:* Versions 19.1 r1-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:* Versions 19.1 r1-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:* Versions 19.1 r1-s4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:* Versions 19.2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:* Versions 19.2 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:* Versions 19.2 r1-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:* Versions 19.3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:* Versions 19.3 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.3:r1-s1:*:*:*:*:*:* Versions 19.3 r1-s1 Vulnerable ·Juniper
Remediation
- Fix · CNA Junos OS (Juniper Networks) Fixed in 18.1, 18.2R2-S7, 18.2R3-S3, 18.3R1-S7, 18.3R2-S4, 18.3R3-S1, 18.4R1-S7, 18.4R2-S4, 18.4R3, 19.1R1-S5, 19.1R2, 19.2R1-S2, 19.2R2, 19.3R2
Timeline
- 2026-10-02 Threatist record created from CVE-2020-1654
- 2026-10-03 Alias added: GHSA-jwqg-fhhf-42x8
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-2020-1654 · CVE Program
- CVE-2020-1654 · NVD
- FIRST EPSS
- GHSA-jwqg-fhhf-42x8 · GitHub Advisory Database · CC BY 4.0
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