CVE-2021-31371
published 2021-10-19CVE-2021-31371: Juniper Networks Junos OS uses the 128.0.0.0/2 subnet for internal communications between the RE and PFEs. It was discovered that packets utilizing these IP…
PriorityP428medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
0.81%
52.9th percentile
Juniper Networks Junos OS uses the 128.0.0.0/2 subnet for internal communications between the RE and PFEs. It was discovered that packets utilizing these IP addresses may egress an QFX5000 Series switch, leaking configuration information such as heartbeats, kernel versions, etc. out to the Internet, leading to an information exposure vulnerability. This issue affects Juniper Networks Junos OS on QFX5110, QFX5120, QFX5200, QFX5210 Series, and QFX5100 with QFX 5e Series image installed: All versions prior to 17.3R3-S12; 18.1 versions prior to 18.1R3-S13; 18.3 versions prior to 18.3R3-S5; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R1-S4, 19.4R3-S5; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2;
Affected
28 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| juniper | junos | <= 17.2 | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos_os | — | — |
| juniper | qfx_series | — | — |
| juniper_networks | junos_os | >= 18.1 < 18.1R3-S13 | 18.1R3-S13 |
| juniper_networks | junos_os | >= 18.3 < 18.3R3-S5 | 18.3R3-S5 |
| juniper_networks | junos_os | >= 19.1 < 19.1R3-S6 | 19.1R3-S6 |
| juniper_networks | junos_os | >= 19.2 < 19.2R1-S7, 19.2R3-S3 | 19.2R1-S7, 19.2R3-S3 |
| juniper_networks | junos_os | >= 19.3 < 19.3R2-S6, 19.3R3-S3 | 19.3R2-S6, 19.3R3-S3 |
| juniper_networks | junos_os | >= 19.4 < 19.4R1-S4, 19.4R3-S5 | 19.4R1-S4, 19.4R3-S5 |
| juniper_networks | junos_os | >= 20.1 < 20.1R2-S2, 20.1R3-S1 | 20.1R2-S2, 20.1R3-S1 |
| juniper_networks | junos_os | >= 20.2 < 20.2R3-S2 | 20.2R3-S2 |
| juniper_networks | junos_os | >= 20.3 < 20.3R3-S1 | 20.3R3-S1 |
| juniper_networks | junos_os | >= 20.4 < 20.4R2-S1, 20.4R3 | 20.4R2-S1, 20.4R3 |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N
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GHSA
GHSA-c966-q9gj-wmw3: Juniper Networks Junos OS uses the 128
ghsa_unreviewed·2022-05-24
CVE-2021-31371 [MEDIUM] GHSA-c966-q9gj-wmw3: Juniper Networks Junos OS uses the 128
Juniper Networks Junos OS uses the 128.0.0.0/2 subnet for internal communications between the RE and PFEs. It was discovered that packets utilizing these IP addresses may egress an QFX5110 switch, leaking configuration information such as heartbeats, kernel versions, etc. out to the Internet, leading to an information exposure vulnerability. This issue affects: Juniper Networks Junos OS on QFX5110 Series: All versions prior to 17.3R3-S12; 18.1 versions prior to 18.1R3-S13; 18.3 versions prior to 18.3R3-S5; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R1-S4, 19.4R3-S5; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3-S1; 20.4 v
Juniper
CVE-2021-31371: Juniper Networks Junos OS uses the 128.0.0.0/2 subnet for internal communications between the RE and PFEs. It was discovered that packets utilizing th
vendor_juniper·2021-10-19·CVSS 5.3
CVE-2021-31371 [MEDIUM] CWE-200 CVE-2021-31371: Juniper Networks Junos OS uses the 128.0.0.0/2 subnet for internal communications between the RE and PFEs. It was discovered that packets utilizing th
CVE-2021-31371: Juniper Networks Junos OS uses the 128.0.0.0/2 subnet for internal communications between the RE and PFEs. It was discovered that packets utilizing these IP addresses may egress an QFX5000 Series switch, leaking configuration information such as heartbeats, kernel versions, etc. out to the Internet, leading to an information exposure vulnerability. This issue affects Juniper Networks Junos OS on QFX5110, QFX5120, QFX5200, QFX5210 Series, and QFX5100 with QFX 5e Series image installed: All versions prior to 17.3R3-S12; 18.1 versions prior to 18.1R3-S13; 18.3 versions prior to 18.3R3-S5; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R1-S4, 19.4R3-S5; 20.1 versions prior to
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-10-19
Published