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Mozilla Foundation Security Advisory 2020-34

Security Vulnerabilities fixed in Firefox for iOS 28

Announced
July 28, 2020
Impact
high
Products
Firefox for iOS
Fixed in
  • Firefox for iOS 28

#CVE-2020-15662: Download JS user script can be overidden

Reporter
Muneaki Nishimura
Impact
high
Description

A rogue webpage could override the injected WKUserScript used by the download feature, this exploit could result in the user downloading an unintended file.

References

#CVE-2020-15661: Login JS user script can be overidden

Reporter
Muneaki Nishimura
Impact
high
Description

A rogue webpage could override the injected WKUserScript used by the logins autofill, this exploit could result in leaking a password for the current domain.

References

#CVE-2020-15651: Download Feature: unicode RTLO char can fake the file extension

Reporter
superxx
Impact
low
Description

A unicode RTL order character in the downloaded file name can be used to change the file's name during the download UI flow to change the file extension.

References