CVE-2021-0286
CVSS V2 High 7.8
CVSS V3 High 7.5
Description
A vulnerability in the handling of exceptional conditions in Juniper Networks Junos OS Evolved (EVO) allows an attacker to send specially crafted packets to the device, causing the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) process to crash and restart, impacting all traffic going through the FPC, resulting in a Denial of Service (DoS). Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. Following messages will be logged prior to the crash: Feb 2 10:14:39 fpc0 evo-aftmand-bt[16263]: [Error] Nexthop: Failed to get fwd nexthop for nexthop:32710470974358 label:1089551617 for session:18 probe:35 Feb 2 10:14:39 fpc0 evo-aftmand-bt[16263]: [Error] Nexthop: Failed to get fwd nexthop for nexthop:19241453497049 label:1089551617 for session:18 probe:37 Feb 2 10:14:39 fpc0 evo-aftmand-bt[16263]: [Error] Nexthop: Failed to get fwd nexthop for nexthop:19241453497049 label:1089551617 for session:18 probe:44 Feb 2 10:14:39 fpc0 evo-aftmand-bt[16263]: [Error] Nexthop: Failed to get fwd nexthop for nexthop:32710470974358 label:1089551617 for session:18 probe:47 Feb 2 10:14:39 fpc0 audit[16263]: ANOM_ABEND auid=4294967295 uid=0 gid=0 ses=4294967295 pid=16263 comm="EvoAftManBt-mai" exe="/usr/sbin/evo-aftmand-bt" sig=11 Feb 2 10:14:39 fpc0 kernel: audit: type=1701 audit(1612260879.272:17): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=16263 comm="EvoAftManBt-mai" exe="/usr/sbin/evo-aftmand-bt" sig=1 This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-EVO; 21.1 versions prior to 21.1R2-EVO.
Overview
- CVE ID
- CVE-2021-0286
- Assigner
- sirt@juniper.net
- Vulnerability Status
- Analyzed
- Published Version
- 2021-07-15T20:15:10
- Last Modified Date
- 2021-10-25T15:20:20
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:juniper:junos_os_evolved:19.2:r1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:19.2:r2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:19.3:r1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:19.3:r2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:19.4:r1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:19.4:r2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:19.4:r2-s1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:20.1:-:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:20.1:r1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:20.1:r1-s1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:20.2:-:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:20.3:-:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:20.3:r1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:juniper:junos_os_evolved:21.1:r1:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:N/I:N/A:C
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- COMPLETE
- Base Score
- 7.8
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://kb.juniper.net/JSA11188 | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-0286 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0286 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:50:02 | Added to TrackCVE | |||
| 2022-12-05 06:18:13 | 2021-07-15T20:15Z | 2021-07-15T20:15:10 | CVE Published Date | updated |
| 2022-12-05 06:18:13 | 2021-10-25T15:20:20 | CVE Modified Date | updated | |
| 2022-12-05 06:18:13 | Analyzed | Vulnerability Status | updated |