CVE-2024-21620

Summary

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in J-Web of Juniper Networks Junos OS on SRX Series and EX Series allows an attacker to construct a URL that when visited by another user enables the attacker to execute commands with the target's permissions, including an administrator.

A specific invocation of the emit_debug_note method in webauth_operation.php will echo back the data it receives.

This issue affects Juniper Networks Junos OS on SRX Series and EX Series:

  • All versions earlier than 20.4R3-S10;
  • 21.2 versions earlier than 21.2R3-S8;
  • 21.4 versions earlier than 21.4R3-S6;
  • 22.1 versions earlier than 22.1R3-S5;
  • 22.2 versions earlier than 22.2R3-S3;
  • 22.3 versions earlier than 22.3R3-S2;
  • 22.4 versions earlier than 22.4R3-S1;
  • 23.2 versions earlier than 23.2R2;
  • 23.4 versions earlier than 23.4R2.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS0 < 20.4R3-S10affected
Juniper NetworksJunos OS21.2 < 21.2R3-S8affected
Juniper NetworksJunos OS21.4 < 21.4R3-S6affected
Juniper NetworksJunos OS22.1 < 22.1R3-S5affected
Juniper NetworksJunos OS22.2 < 22.2R3-S3affected
Juniper NetworksJunos OS22.3 < 22.3R3-S2affected
Juniper NetworksJunos OS22.4 < 22.4R3-S1affected
Juniper NetworksJunos OS23.2 < 23.2R2affected
Juniper NetworksJunos OS23.4 < 23.4R2affected

Weaknesses

  • CWE-79: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Workarounds

Disable J-Web, or limit access to only trusted hosts and users.

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References