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Junos OS: MX Series: Receipt of specific packets can cause services card to restart when DNS filtering is configured. (Juniper Networks Junos OS)

CVE-2020-1660
HIGH 8.3

At a glance

Source
NVD
EPSS
EPSS 0.79 % · percentile 56 ()
State
PUBLISHED
Published
Updated
Assigner
juniper
NVD status
Modified

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Description

When DNS filtering is enabled on Juniper Networks Junos MX Series with one of the following cards MS-PIC, MS-MIC or MS-MPC, an incoming stream of packets processed by the Multiservices PIC Management Daemon (mspmand) process, responsible for managing "URL Filtering service", may crash, causing the Services PIC to restart. While the Services PIC is restarting, all PIC services including DNS filtering service (DNS sink holing) will be bypassed until the Services PIC completes its boot process. This vulnerability might allow an attacker to cause an extended Denial of Service (DoS) attack against the device and to cause clients to be vulnerable to DNS based attacks by malicious DNS servers when they send DNS requests through the device. As a result, devices which were once protected by the DNS Filtering service are no longer protected and at risk of exploitation. This issue affects Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S8; 18.3 versions prior to 18.3R3-S1; 18.4 versions prior to 18.4R3; 19.1 versions prior to 19.1R3; 19.2 versions prior to 19.2R2; 19.3 versions prior to 19.3R3. This issue does not affect Juniper Networks Junos OS 17.4, 18.1, and 18.2.

Weaknesses (CWE)

  • CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 8.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:Ljuniper
CVSS 3.1HIGH 8.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:LNVD · sirt@juniper.net (Secondary)
CVSS 3.1CRITICAL 9.9CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:HNVD · nvd@nist.gov (Primary)
CVSS 2.0MEDIUM 6.8AV:N/AC:M/Au:N/C:P/I:P/A:PNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Juniper Networks · Junos OSaffected 17.3 < 17.3R3-S8 ; affected 18.3 < 18.3R3-S1 ; affected 18.4 < 18.4R3 ; affected 19.1 < 19.1R3 ; affected 19.2 < 19.2R2 ; affected 19.3 < 19.3R3
Juniper Networks · Junos OSunaffected 17.4 ; unaffected 18.1 ; unaffected 18.2

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD