Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Within seconds, TWITTER Cookie Preference Settings change from SESSION to ALLOW. Vunerability exploit, or handshake?

  • 2 (ردّان اثنان)
  • 1 has this problem
  • 12 views
  • آخر ردّ كتبه cor-el

more options

I've reset Cookie preferences a dozen or more times; removing the Twitter account completely and only "Allow for Session" cookies. Then when I check back, withing seconds, the Cookie Preferences change back to ALLOW.

Twitter is the only website I've ever seen that's capable of doing this.

This is either a vulnerability in Mozilla Firefox, or Twitter has 'made a deal' with Mozilla to allow special preferences.

https://twitter.com/serr8d/status/393709767606013952

I've reset Cookie preferences a dozen or more times; removing the Twitter account completely and only "Allow for Session" cookies. Then when I check back, withing seconds, the Cookie Preferences change back to ALLOW. Twitter is the only website I've ever seen that's capable of doing this. This is either a vulnerability in Mozilla Firefox, or Twitter has 'made a deal' with Mozilla to allow special preferences. https://twitter.com/serr8d/status/393709767606013952

All Replies (2)

more options

I'm using Ghostery, NoScript, ABP and Self-Destructing Cookies. There's no reason Mozilla Firefox should allow Twitter, or any other website, to get away with this sort of exploit.

Session Cookies should stay that way, period, no matter if I use 'Private Browsing' or not.

more options

If you use extensions like Ghostery that can block or otherwise affect cookies then make sure that such extensions aren't causing this issue.

Clear the cache and cookies only from websites that cause problems.

"Clear the Cache":

  • Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Firefox/Tools > Options > Privacy > Cookies: "Show Cookies"

If clearing cookies doesn't work then it is possible that the cookies.sqlite file that stores the cookies is corrupted.

Rename (or delete) cookies.sqlite (cookies.sqlite.old) and delete other present cookie files like cookies.sqlite-journal in the Firefox profile folder in case the file cookies.sqlite got corrupted.

You can delete the permissions.sqlite file in the Firefox profile folder to reset all permissions.

Modified by cor-el