Vulnerability-Lookup

CERTFR-2021-AVI-039

Vulnerability from certfr_avis - Published: 2021-01-19 - Updated: 2021-01-19

Une vulnérabilité a été découverte dans Juniper Junos OS. Elle permet à un attaquant de provoquer une atteinte à la confidentialité des données.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Junos OS 17.4R3 versions antérieures à 17.4R3-S3
Junos OS 18.1R3 versions entre 18.1R3-S6 et 18.1R3-S11
Junos OS 18.2R3 versions antérieures à 18.2R3-S6
Junos OS 18.3R3 versions antérieures à 18.3R3-S4
Junos OS 18.4R2 versions antérieures à 18.4R2-S5
Junos OS 18.4R3 versions antérieures à 18.4R3-S6
Junos OS 19.1 versions entre 19.1R2 et 19.1R3-S3
Junos OS 19.2 versions antérieures à 19.2R3-S1
Junos OS 19.3 versions antérieures à 19.3R2-S5, 19.3R3
Junos OS 19.4 versions antérieures à 19.4R2-S2, 19.4R3
Junos OS 20.1 versions antérieures à 20.1R2
Junos OS 20.2 versions antérieures à 20.2R1-S2, 20.2R2

Les versions antérieures à la version 17.4R3 ne sont pas affectées.

Impacted products

	Vendor	Product	Description

References

Title

Publication Time

CVE-2021-0217 (GCVE-0-2021-0217)

Vulnerability from cvelistv5 – Published: 2021-01-15 17:35 – Updated: 2024-09-17 02:06

Title

Junos OS: EX Series and QFX Series: Memory leak issue processing specific DHCP packets

Summary

A vulnerability in processing of certain DHCP packets from adjacent clients on EX Series and QFX Series switches running Juniper Networks Junos OS with DHCP local/relay server configured may lead to exhaustion of DMA memory causing a Denial of Service (DoS). Over time, exploitation of this vulnerability may cause traffic to stop being forwarded, or to crashing of the fxpc process. When Packet DMA heap utilization reaches 99%, the system will become unstable. Packet DMA heap utilization can be monitored through the following command: user@junos# request pfe execute target fpc0 timeout 30 command "show heap" ID Base Total(b) Free(b) Used(b) % Name -- ---------- ----------- ----------- ----------- --- ----------- 0 213301a8 536870488 387228840 149641648 27 Kernel 1 91800000 8388608 3735120 4653488 55 DMA 2 92000000 75497472 74452192 1045280 1 PKT DMA DESC 3 d330000 335544320 257091400 78452920 23 Bcm_sdk 4 96800000 184549376 2408 184546968 99 Packet DMA <--- 5 903fffe0 20971504 20971504 0 0 Blob An indication of the issue occurring may be observed through the following log messages: Dec 10 08:07:00.124 2020 hostname fpc0 brcm_pkt_buf_alloc:523 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.126 2020 hostname fpc0 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.128 2020 hostname fpc0 brcm_pkt_buf_alloc:523 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.130 2020 hostnameC fpc0 (buf alloc) failed allocating packet buffer This issue affects Juniper Networks Junos OS on EX Series and QFX Series: 17.4R3 versions prior to 17.4R3-S3; 18.1R3 versions between 18.1R3-S6 and 18.1R3-S11; 18.2R3 versions prior to 18.2R3-S6; 18.3R3 versions prior to 18.3R3-S4; 18.4R2 versions prior to 18.4R2-S5; 18.4R3 versions prior to 18.4R3-S6; 19.1 versions between 19.1R2 and 19.1R3-S3; 19.2 versions prior to 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3; 19.4 versions prior to 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S2, 20.2R2. Junos OS versions prior to 17.4R3 are unaffected by this vulnerability.

Severity ?

7.4 (High)


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

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

juniper

References

URL

Tags

https://kb.juniper.net/JSA11107

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	Juniper Networks	Junos OS	Unaffected: unspecified , < 17.4R3 (custom) Affected: 17.4 , < 17.4R3-S3 (custom) Affected: 18.1R3-S6 , < 18.1* (custom) Affected: 18.2R3 , < 18.2* (custom) Affected: 18.3R3 , < 18.3* (custom) Affected: 18.4R2 , < 18.4* (custom) Affected: 19.1R2 , < 19.1* (custom) Affected: 19.2 , < 19.2R3-S1 (custom) Affected: 19.3 , < 19.3R2-S5, 19.3R3 (custom) Affected: 19.4 , < 19.4R2-S2, 19.4R3 (custom) Affected: 20.1 , < 20.1R2 (custom) Affected: 20.2 , < 20.2R1-S2, 20.2R2 (custom)

Show details on NVD website

JSON

To clipboard Create KEV Entry

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    "datePublished": "2021-01-15T17:35:59.456240Z",
    "dateReserved": "2020-10-27T00:00:00",
    "dateUpdated": "2024-09-17T02:06:21.940Z",
    "state": "PUBLISHED"
  },
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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.

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