CVE-2017-7781

Impact:
Moderate
Public Date:
2017-08-08
CWE:
CWE-681
Bugzilla:
1479197: CVE-2017-7781 Mozilla: Elliptic curve point addition error when using mixed Jacobian-affine coordinates (MFSA 2017-18)

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2017-7781 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 6.1
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Impact Low
Availability Impact None
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Acknowledgements

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Antonio Sanso as the original reporter.

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation