Riskcovery

CVE-2021-0256

Junos OS: mosquitto Local Privilege Escalation vulnerability in SUID binaries

State
Published
Severity
5.5 Medium
Published
Apr 22, 2021
Updated
Sep 16, 2024
Reserved
Oct 27, 2020

Read the record on cve.org

Description

A sensitive information disclosure vulnerability in the mosquitto message broker of Juniper Networks Junos OS may allow a locally authenticated user with shell access the ability to read portions of sensitive files, such as the master.passwd file. Since mosquitto is shipped with setuid permissions enabled and is owned by the root user, this vulnerability may allow a local privileged user the ability to run mosquitto with root privileges and access sensitive information stored on the local filesystem. This issue affects Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S12, 17.4 versions prior to 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.3 versions prior to 18.3R3-S4; 19.1 versions prior to 19.1R3-S4; 19.3 versions prior to 19.3R3-S1, 19.3R3-S2; 19.4 versions prior to 19.4R2-S3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S3, 20.2R2, 20.2R3.

Scores

CVSSScoreVectorSource
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Njuniper

Weaknesses

  • CWE-250 Execution with Unnecessary Privileges

Affected Products

ProductVersions
Junos OSJuniper Networks
  • 17.3 to before 17.3R3-S12Affected
  • 17.4 to before 17.4R3-S4Affected
  • 18.1 to before 18.1R3-S12Affected
  • 18.3 to before 18.3R3-S4Affected
  • 19.1 to before 19.1R3-S4Affected
  • 19.3 to before 19.3R3-S1, 19.3R3-S2Affected
  • 19.4 to before 19.4R2-S3Affected
  • 20.1 to before 20.1R2Affected
  • 20.2 to before 20.2R1-S3, 20.2R2, 20.2R3Affected

References

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