CVE-2017-7781 Other in Firefox
A flaw in Firefox's elliptic curve implementation allows man-in-the-middle attackers to corrupt shared secrets, compromising connection security.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-7781?
CVE-2017-7781 is a medium-severity vulnerability in Mozilla Firefox, published on 11 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An error occurs in the elliptic curve point addition algorithm that uses mixed Jacobian-affine coordinates where it can yield a result "POINT_AT_INFINITY" when it should not. A man-in-the-middle attacker could use this to interfere with a connection, resulting in an attacked party computing an incorrect shared secret. This vulnerability affects Firefox < 55.
Which versions are affected by CVE-2017-7781?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2017-7781?
Upgrade to a fixed version.
Is CVE-2017-7781 being exploited?
There is no known exploitation of CVE-2017-7781 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-r4hg-5mwm-xfgr, UBUNTU-CVE-2017-7781.