CVE-2022-22248

Summary

An Incorrect Permission Assignment vulnerability in shell processing of Juniper Networks Junos OS Evolved allows a low-privileged local user to modify the contents of a configuration file which could cause another user to execute arbitrary commands within the context of the follow-on user's session. If the follow-on user is a high-privileged administrator, the attacker could leverage this vulnerability to take complete control of the target system. While this issue is triggered by a user, other than the attacker, accessing the Junos shell, an attacker simply requires Junos CLI access to exploit this vulnerability. This issue affects Juniper Networks Junos OS Evolved: 20.4-EVO versions prior to 20.4R3-S1-EVO; All versions of 21.1-EVO; 21.2-EVO versions prior to 21.2R3-EVO; 21.3-EVO versions prior to 21.3R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 19.2R1-EVO.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS Evolvedunspecified < 19.2R1-EVOunaffected
Juniper NetworksJunos OS Evolved20.4-EVO < 20.4R3-S1-EVOaffected
Juniper NetworksJunos OS Evolved21.1R1-EVO < 21.1-EVO*affected
Juniper NetworksJunos OS Evolved21.2-EVO < 21.2R3-EVOaffected
Juniper NetworksJunos OS Evolved21.3-EVO < 21.3R2-EVOaffected

Weaknesses

  • CWE-732: CWE-732 Incorrect Permission Assignment for Critical Resource

Workarounds

Limit access to the Junos shell by system administrators until an upgrade can be performed.

Use access lists or firewall filters to limit access to the Junos CLI only from trusted hosts and administrators.

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References