1580409 - security library: improperly formatted DER-encoded message. Error code: SEC_ERROR_BAD_DER

Status: RESOLVED INCOMPLETE

(Core :: Security: PSM, defect)

Description

[gauravf4u]

Attachment: firefox error.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.36

Steps to reproduce:

Before the latest release 69.0, we were able to access our application in the development environment.We access the same through https and we are using a self signed certificate in dev environment.But after firefox was upgraded to 69.0, we are no longer able to access the same application and getting the following error.
An error occurred during a connection to (application url) security library: improperly formatted DER-encoded message. Error code: SEC_ERROR_BAD_DER

Actual results:

This happend suddenly yesterday and none of our teammates with firefox 69.0 are able to access this application.People with a lower version are able to access the application.
This application can be accessed using chrome or internet explorer.

Expected results:

The application should be accessible all the times.
Works fine in all other major browsers.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 2

[Dana Keeler (she/her) [:keeler]]

Can you attach a packet trace of a TLS handshake to this bug? Thanks!

Comment 3

[shwong73]

I face the same issue as well

Comment 4

[Dana Keeler (she/her) [:keeler]]

(In reply to shwong73 from comment #3)

I face the same issue as well

Can you attach a packet trace of a TLS handshake to this bug? Thanks!