CVE-2021-0206

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
A NULL Pointer Dereference vulnerability in Juniper Networks Junos OS allows an attacker to send a specific packet causing the packet forwarding engine (PFE) to crash and restart, resulting in a Denial of Service (DoS). By continuously sending these specific packets, an attacker can repeatedly disable the PFE causing a sustained Denial of Service (DoS). This issue only affects Juniper Networks NFX Series, SRX Series platforms when SSL Proxy is configured. This issue affects Juniper Networks Junos OS on NFX Series and SRX Series: 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R3-S1; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3; 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 versions on NFX Series and SRX Series prior to 18.3R1.
Overview
  • CVE ID
  • CVE-2021-0206
  • Assigner
  • sirt@juniper.net
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-01-15T18:15:14
  • Last Modified Date
  • 2021-01-21T19:50:44
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:juniper:junos:18.3:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r1-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r1-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r1-s5:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r1-s6:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r2-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r2-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r2-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r3-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r3-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.3:r3-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1-s6:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1-s5:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:h:juniper:nfx150:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:nfx250:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:nfx350:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx1500:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx300:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx320:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx340:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx345:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx380:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx4100:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx4200:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx4600:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx5400:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx550:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
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/JSA11096 Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-0206
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0206
History
Created Old Value New Value Data Type Notes
2022-05-10 07:26:34 Added to TrackCVE
2022-12-05 20:15:54 2021-01-15T18:15Z 2021-01-15T18:15:14 CVE Published Date updated
2022-12-05 20:15:54 2021-01-21T19:50:44 CVE Modified Date updated
2022-12-05 20:15:54 Analyzed Vulnerability Status updated