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VAR-202104-0555

Vulnerability from variot - Updated: 2024-11-23 22:47

A vulnerability in the handling of internal resources necessary to bring up a large number of Layer 2 broadband remote access subscriber (BRAS) nodes in Juniper Networks Junos OS can cause the Access Node Control Protocol daemon (ANCPD) to crash and restart, leading to a Denial of Service (DoS) condition. Continued processing of spoofed subscriber nodes will create a sustained Denial of Service (DoS) condition. When the number of subscribers attempting to connect exceeds the configured maximum-discovery-table-entries value, the subscriber fails to map to an internal neighbor entry, causing the ANCPD process to crash. This issue affects Juniper Networks Junos OS: All versions prior to 17.3R3-S12; 17.4 versions prior to 17.4R2-S13; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R1-S8, 18.4R3-S8; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R3-S1; 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2; 20.3 versions prior to 20.3R2. Juniper Networks Junos OS is a set of network operating system of Juniper Networks (Juniper Networks) dedicated to the company's hardware equipment. The operating system provides a secure programming interface and Junos SDK. There is a security vulnerability in Junos OS, and there is no relevant information about this vulnerability at present, please pay attention to CNNVD or manufacturer announcements at any time

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CVE-2021-0224 (GCVE-0-2021-0224)

Vulnerability from cvelistv5 – Published: 2021-04-22 19:36 – Updated: 2024-09-16 20:16

Title

Junos OS: ANCPD core when hitting maximum-discovery-table-entries limit

Summary

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling
Denial of Service (DoS)

Assigner

juniper

References

URL

Tags

https://kb.juniper.net/JSA11119

x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Juniper Networks	Junos OS	Affected: All , < 17.3R3-S12 (custom) Affected: 17.4 , < 17.4R2-S13 (custom) Affected: 18.1 , < 18.1R3-S13 (custom) Affected: 18.2 , < 18.2R3-S8 (custom) Affected: 18.3 , < 18.3R3-S5 (custom) Affected: 18.4 , < 18.4R1-S8, 18.4R3-S8 (custom) Affected: 19.1 , < 19.1R3-S4 (custom) Affected: 19.2 , < 19.2R3-S2 (custom) Affected: 19.3 , < 19.3R3-S1 (custom) Affected: 19.4 , < 19.4R3-S1 (custom) Affected: 20.1 , < 20.1R2 (custom) Affected: 20.2 , < 20.2R2 (custom) Affected: 20.3 , < 20.3R2 (custom)

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      "title": "Junos OS: ANCPD core when hitting maximum-discovery-table-entries limit",
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          "DATE_PUBLIC": "2021-04-14T16:00:00.000Z",
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Sightings

Author	Source	Type	Date

Nomenclature

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

VAR-202104-0555

CVE-2021-0224 (GCVE-0-2021-0224)

Tags

Sightings

Nomenclature