CVE-2023-5723 Other in Firefox
An attacker with script access could cause unknown errors in Firefox by setting cookies with invalid characters, potentially leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-5723?
CVE-2023-5723 is a medium-severity vulnerability in Mozilla Firefox, published on 24 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An attacker with temporary script access to a site could have set a cookie containing invalid characters using `document.cookie` that could have led to unknown errors. This vulnerability affects Firefox < 119.
Which versions are affected by CVE-2023-5723?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2023-5723?
Upgrade to a fixed version.
Is CVE-2023-5723 being exploited?
There is no known exploitation of CVE-2023-5723 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-7mjf-v629-m8hm, UBUNTU-CVE-2023-5723.