CVE-2021-31355

Summary

A persistent cross-site scripting (XSS) vulnerability in the captive portal graphical user interface of Juniper Networks Junos OS may allow a remote authenticated user to inject web script or HTML and steal sensitive data and credentials from a web administration session, possibly tricking a follow-on administrative user to perform administrative actions on the device. This issue affects Juniper Networks Junos OS: All versions, including the following supported releases: 12.3X48 versions prior to 12.3X48-D105; 15.1X49 versions prior to 15.1X49-D220; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R3-S4; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R3; 20.2 versions prior to 20.2R1-S1, 20.2R2; 20.3 versions prior to 20.3R2; 20.4 versions prior to 20.4R2; 21.1 versions prior to 21.1R2.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS12.3X48 < 12.3X48-D105affected
Juniper NetworksJunos OS15.1X49 < 15.1X49-D220affected
Juniper NetworksJunos OS18.3 < 18.3R3-S5affected
Juniper NetworksJunos OS18.4 < 18.4R3-S9affected
Juniper NetworksJunos OS19.1 < 19.1R3-S7affected
Juniper NetworksJunos OS19.2 < 19.2R3-S3affected
Juniper NetworksJunos OS19.3 < 19.3R3-S4affected
Juniper NetworksJunos OS19.4 < 19.4R3-S6affected
Juniper NetworksJunos OS20.1 < 20.1R3affected
Juniper NetworksJunos OS20.2 < 20.2R1-S1, 20.2R2affected
Juniper NetworksJunos OS20.3 < 20.3R2affected
Juniper NetworksJunos OS20.4 < 20.4R2affected
Juniper NetworksJunos OS21.1 < 21.1R2affected

Weaknesses

  • CWE-79: CWE-79 Cross-site Scripting (XSS)

Workarounds

There are no viable workarounds for this issue.

ADP Enrichment

CVE Program Container

Additional References

References