| Summary | In a Segment Routing ISIS (SR-ISIS)/MPLS environment, on Juniper Networks Junos OS and Junos OS Evolved devices, configured with ISIS Flexible Algorithm for Segment Routing and sensor-based statistics, a flap of a ISIS link in the network, can lead to a routing process daemon (RPD) crash and restart, causing a Denial of Service (DoS). Continued link flaps will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 19.4 versions prior to 19.4R1-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R2; Juniper Networks Junos OS Evolved: 20.3-EVO versions prior to 20.3R2-EVO; 20.4-EVO versions prior to 20.4R2-EVO. This issue does not affect: Juniper Networks Junos OS releases prior to 19.4R1. Juniper Networks Junos OS Evolved releases prior to 19.4R1-EVO. |
|---|---|
| Publication Date | July 16, 2021, 5:15 a.m. |
| Registration Date | July 16, 2021, 10 a.m. |
| Last Update | Nov. 21, 2024, 2:42 p.m. |
| CVSS3.1 : MEDIUM | |
| スコア | 6.5 |
|---|---|
| Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 攻撃元区分(AV) | 隣接 |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃に必要な特権レベル(PR) | 不要 |
| 利用者の関与(UI) | 不要 |
| 影響の想定範囲(S) | 変更なし |
| 機密性への影響(C) | なし |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | 高 |
| CVSS2.0 : MEDIUM | |
| Score | 5.7 |
|---|---|
| Vector | AV:A/AC:M/Au:N/C:N/I:N/A:C |
| 攻撃元区分(AV) | 隣接 |
| 攻撃条件の複雑さ(AC) | 中 |
| 攻撃前の認証要否(Au) | 不要 |
| 機密性への影響(C) | なし |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | 高 |
| Get all privileges. | いいえ |
| Get user privileges | いいえ |
| Get other privileges | いいえ |
| User operation required | いいえ |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos_os_evolved:20.3:r1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:19.4:r3-s1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:19.4:r2-s3:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:19.4:r1-s3:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos:20.1:r2:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s1:*:*:*:*:*:* | |||||
| cpe:2.3:o:juniper:junos_os_evolved:20.3:-:*:*:*:*:*:* | |||||
| Title | Juniper Networks Junos OS および Junos OS Evolved デバイスにおける例外的な状態のチェックに関する脆弱性 |
|---|---|
| Summary | Juniper Networks Junos OS および Junos OS Evolved デバイスには、例外的な状態のチェックに関する脆弱性が存在します。 |
| Possible impacts | サービス運用妨害 (DoS) 状態にされる可能性があります。 |
| Solution | ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。 |
| Publication Date | July 14, 2021, midnight |
| Registration Date | April 15, 2022, 2:26 p.m. |
| Last Update | April 15, 2022, 2:26 p.m. |
| ジュニパーネットワークス |
| Junos OS |
| Junos OS Evolved |
| No | Changed Details | Date of change |
|---|---|---|
| 1 | [2022年03月30日] 掲載 | March 30, 2022, 11 a.m. |