CVE-2018-5114 Information disclosure in Firefox
Attackers can access HttpOnly cookie values via script if the cookie is modified while the document is open, potentially exposing sensitive session data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-5114?
CVE-2018-5114 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 11 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
If an existing cookie is changed to be "HttpOnly" while a document is open, the original value remains accessible through script until that document is closed. Network requests correctly use the changed HttpOnly cookie. This vulnerability affects Firefox < 58.
Weakness: CWE-200
Which versions are affected by CVE-2018-5114?
It affects 2 products.
Products include Canonical Ubuntu Linux, Mozilla Firefox.
How do I fix CVE-2018-5114?
Upgrade to a fixed version.
Is CVE-2018-5114 being exploited?
There is no known exploitation of CVE-2018-5114 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as GHSA-28wg-555g-fr2v, UBUNTU-CVE-2018-5114.