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JuniperCVELIST:CVE-2024-39520

HistoryJul 11, 2024 - 3:56 p.m.

CVE-2024-39520 Junos OS Evolved: CLI parameter processing issue allows privilege escalation

2024-07-1115:56:53

CWE-78

juniper

www.cve.org

juniper networks

cli

privilege escalation

vulnerability

version

command options

parameters

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

CVSS4

8.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/SC:N/VI:H/SI:N/VA:H/SA:N

EPSS

Percentile

9.9%

JSON

An Improper Neutralization of Special Elements vulnerability in Juniper Networks Junos OS Evolved commands allows a local, authenticated attacker with low privileges to escalate their privileges to ‘root’ leading to a full compromise of the system.

The Junos OS Evolved CLI doesn’t properly handle command options in some cases, allowing users which execute specific CLI commands with a crafted set of parameters to escalate their privileges to root on shell level.

This issue affects Junos OS Evolved:

All version before 20.4R3-S6-EVO,
21.2-EVO versions before 21.2R3-S4-EVO,
21.4-EVO versions before 21.4R3-S6-EVO,
22.2-EVO versions before 22.2R2-S1-EVO, 22.2R3-EVO,
22.3-EVO versions before 22.3R2-EVO.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS Evolved",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "20.4R3-S6-EVO",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "21.2R3-S4-EVO",
        "status": "affected",
        "version": "21.2-EVO",
        "versionType": "semver"
      },
      {
        "lessThan": "21.4R3-S6-EVO",
        "status": "affected",
        "version": "21.4-EVO",
        "versionType": "semver"
      },
      {
        "lessThan": "22.2R2-S1-EVO, 22.2R3-EVO",
        "status": "affected",
        "version": "22.2-EVO",
        "versionType": "semver"
      },
      {
        "lessThan": "22.3R2-EVO",
        "status": "affected",
        "version": "22.3-EVO",
        "versionType": "semver"
      }
    ]
  }
]

References

supportportal.juniper.net/JSA82975

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

CVSS4

8.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/SC:N/VI:H/SI:N/VA:H/SA:N

EPSS

Percentile

9.9%

JSON

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