CVE-2017-7839

Description

Control characters prepended before "javascript:" URLs pasted in the addressbar can cause the leading characters to be ignored and the pasted JavaScript to be executed instead of being blocked. This could be used in social engineering and self-cross-site-scripting (self-XSS) attacks where users are convinced to copy and paste text into the addressbar. This vulnerability affects Firefox < 57.

Weakness classification

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

Primary references

• security@mozilla.org — Third Party Advisory, VDB Entry
• security@mozilla.org — Third Party Advisory, VDB Entry
• security@mozilla.org — Issue Tracking, Permissions Required
• security@mozilla.org — Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
• af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Permissions Required
• af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory