CVE-2021-0211 (GCVE-0-2021-0211)

Vulnerability from cvelistv5 – Published: 2021-01-15 17:35 – Updated: 2024-09-16 20:52
VLAI?
Title
Junos OS and Junos OS Evolved: Upon receipt of a specific BGP FlowSpec message network traffic may be disrupted.
Summary
An improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved Routing Protocol Daemon (RPD) service allows an attacker to send a valid BGP FlowSpec message thereby causing an unexpected change in the route advertisements within the BGP FlowSpec domain leading to disruptions in network traffic causing a Denial of Service (DoS) condition. Continued receipt of these update messages will cause a sustained Denial of Service condition. This issue affects Juniper Networks: Junos OS: All versions prior to 17.3R3-S10 with the exceptions of 15.1X49-D240 on SRX Series and 15.1R7-S8 on EX Series; 17.3 versions prior to 17.3R3-S10; 17.4 versions prior to 17.4R2-S12, 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S6; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S6, 18.4R3-S6; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.2 versions prior to 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3-S1; 19.4 versions prior to 19.4R1-S3, 19.4R2-S3, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S3 20.2R2; 20.3 versions prior to 20.3R1-S1, 20.3R2. Junos OS Evolved: All versions prior to 20.3R1-S1-EVO, 20.3R2-EVO.
Severity ?
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
CWE
  • 754 - Improper Check for Unusual or Exceptional Conditions
  • Denial of Service (DoS)
Assigner
References
https://kb.juniper.net/JSA11101 x_refsource_CONFIRM
Impacted products
Vendor Product Version
Juniper Networks Junos OS Affected: 15.1 , < 15.1R7-S8 (custom)
Create a notification for this product.
    Juniper Networks Junos OS Affected: 17.3 , < 17.3R3-S10 (custom)
Affected: 17.4 , < 17.4R2-S12, 17.4R3-S4 (custom)
Affected: 18.1 , < 18.1R3-S12 (custom)
Affected: 18.2 , < 18.2R2-S8, 18.2R3-S6 (custom)
Affected: 18.3 , < 18.3R3-S4 (custom)
Affected: 18.4 , < 18.4R1-S8, 18.4R2-S6, 18.4R3-S6 (custom)
Affected: 19.1 , < 19.1R1-S6, 19.1R2-S2, 19.1R3-S3 (custom)
Affected: 19.2 , < 19.2R3-S1 (custom)
Affected: 19.3 , < 19.3R2-S5, 19.3R3-S1 (custom)
Affected: 19.4 , < 19.4R1-S3, 19.4R2-S3, 19.4R3 (custom)
Affected: 20.1 , < 20.1R2 (custom)
Affected: 20.2 , < 20.2R1-S3 20.2R2 (custom)
Affected: 20.3 , < 20.3R1-S1, 20.3R2 (custom)
Create a notification for this product.
    Juniper Networks Junos OS Affected: 15.1X49 , < 15.1X490-D240 (custom)
Create a notification for this product.
    Juniper Networks Junos OS Evolved Affected: unspecified , < 20.3R1-S1-EVO, 20.3R2-EVO (custom)
Create a notification for this product.
Show details on NVD website
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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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