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CVE-2019-0061

Junos OS: Insecure management daemon (MGD) configuration may allow local privilege escalation

High7.8EPSS 0.36%
Published
Updated
Reserved
Assigned by
juniper

Description

The management daemon (MGD) is responsible for all configuration and management operations in Junos OS. The Junos CLI communicates with MGD over an internal unix-domain socket and is granted special permission to open this protected mode socket. Due to a misconfiguration of the internal socket, a local, authenticated user may be able to exploit this vulnerability to gain administrative privileges. This issue only affects Linux-based platforms. FreeBSD-based platforms are unaffected by this vulnerability. Exploitation of this vulnerability requires Junos shell access. This issue cannot be exploited from the Junos CLI. This issue affects Juniper Networks Junos OS: 15.1X49 versions prior to 15.1X49-D171, 15.1X49-D180; 15.1X53 versions prior to 15.1X53-D496, 15.1X53-D69; 16.1 versions prior to 16.1R7-S4; 16.2 versions prior to 16.2R2-S9; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R1-S8, 17.2R2-S7, 17.2R3-S1; 17.3 versions prior to 17.3R3-S4; 17.4 versions prior to 17.4R1-S6, 17.4R1-S7, 17.4R2-S3, 17.4R3; 18.1 versions prior to 18.1R2-S4, 18.1R3-S4; 18.2 versions prior to 18.2R1-S5, 18.2R2-S2, 18.2R3; 18.3 versions prior to 18.3R1-S3, 18.3R2; 18.4 versions prior to 18.4R1-S2, 18.4R2.

Scores

CVSS scores of CVE-2019-0061, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.36% · top 71% of all CVEs (6 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

Affected products

  • Juniper Networks · Junos OS

    • affected 15.1X49 – < 15.1X49-D171, 15.1X49-D180
    • affected 15.1X53 – < 15.1X53-D496, 15.1X53-D69
    • affected 16.1 – < 16.1R7-S4
    • affected 16.2 – < 16.2R2-S9
    • affected 17.1 – < 17.1R3
    • affected 17.2 – < 17.2R1-S8, 17.2R2-S7, 17.2R3-S1
    • affected 17.3 – < 17.3R3-S4
    • affected 17.4 – < 17.4R1-S6, 17.4R1-S7, 17.4R2-S3, 17.4R3
    • affected 18.1 – < 18.1R2-S4, 18.1R3-S4
    • affected 18.2 – < 18.2R1-S5, 18.2R2-S2, 18.2R3
    • affected 18.3 – < 18.3R1-S3, 18.3R2
    • affected 18.4 – < 18.4R1-S2, 18.4R2

What to do

Solution: The following software releases have been updated to resolve this specific issue: 15.1X49-D171, 15.1X49-D180, 15.1X53-D496, 15.1X53-D69, 16.1R7-S4, 16.2R2-S9, 17.1R3, 17.2R1-S8, 17.2R2-S7, 17.2R3-S1, 17.3R3-S4, 17.4R1-S6, 17.4R1-S7, 17.4R2-S3, 17.4R3, 18.1R2-S4, 18.1R3-S4, 18.2R1-S5, 18.2R2-S2, 18.2R3, 18.3R1-S3, 18.3R2, 18.4R1-S2, 18.4R2, 19.1R1, and all subsequent releases.

Workaround: Limit access to the Junos shell to only trusted administrators.

Exploitation: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .