Bug 1479197 - (CVE-2017-7781) CVE-2017-7781 Mozilla: Elliptic curve point addition error when using mixed Jacobian-affine coordinates (MFSA 2017-18)
CVE-2017-7781 Mozilla: Elliptic curve point addition error when using mixed J...
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
: Reopened, Security
Depends On: 1485769
Blocks: 1484228
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Reported: 2017-08-08 02:38 EDT by Doran Moppert
Modified: 2017-08-28 00:02 EDT (History)
9 users (show)

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Last Closed: 2017-08-28 00:02:52 EDT
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Description Doran Moppert 2017-08-08 02:38:04 EDT
An error 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.

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Name: the Mozilla project
Upstream: Antonio Sanso
Comment 1 Tomas Hoger 2017-08-14 05:21:21 EDT
Upstream commit:


Upstream bug report, which is still non-pubic:

Comment 3 Huzaifa S. Sidhpurwala 2017-08-28 00:02:12 EDT
Created nss-softokn tracking bugs for this issue:

Affects: fedora-all [bug 1485769]

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