CVE-2017-7781

Source
Severity Medium
Remote Yes
Type Incorrect calculation
Description
An elliptic curve point addition error has been found in Firefox < 55.0. 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.
Group Package Affected Fixed Severity Status Ticket
AVG-375 firefox 54.0.1-1 55.0-1 Critical Fixed
Date Advisory Group Package Severity Description
10 Aug 2017 ASA-201708-3 AVG-375 firefox Critical multiple issues
References
https://www.mozilla.org/en-US/security/advisories/mfsa2017-18/#CVE-2017-7781
https://bugzilla.mozilla.org/show_bug.cgi?id=1352039