Impact
If pdf.js is used to load a malicious PDF, and PDF.js is configured with isEvalSupported set to true (which is the default value), unrestricted attacker-controlled JavaScript will be executed in the context of the hosting domain.
Patches
The patch removes the use of eval:
mozilla/pdf.js#18015
Workarounds
Set the option isEvalSupported to false.
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1893645
Impact
If pdf.js is used to load a malicious PDF, and PDF.js is configured with
isEvalSupportedset totrue(which is the default value), unrestricted attacker-controlled JavaScript will be executed in the context of the hosting domain.Patches
The patch removes the use of
eval:mozilla/pdf.js#18015
Workarounds
Set the option
isEvalSupportedtofalse.References
https://bugzilla.mozilla.org/show_bug.cgi?id=1893645