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Ubuntu: (Multiple Advisories) (CVE-2017-7781): Firefox regression

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Ubuntu: (Multiple Advisories) (CVE-2017-7781): Firefox regression

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
08/08/2017
Created
07/25/2018
Added
08/16/2017
Modified
03/02/2020

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.

Solution(s)

  • ubuntu-upgrade-firefox
  • ubuntu-upgrade-xul-ext-ubufox

References

  • USN-3391-1
  • USN-3391-2
  • USN-3391-3
  • CVE-2017-7781

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