Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 55.0 |
References
- http://www.securityfocus.com/bid/100383Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039124Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1352039ExploitIssue TrackingThird Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-18/Vendor Advisory
- http://www.securityfocus.com/bid/100383Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039124Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1352039ExploitIssue TrackingThird Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-18/Vendor Advisory
FAQ
What is CVE-2017-7781?
CVE-2017-7781 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 attac...
How severe is CVE-2017-7781?
CVE-2017-7781 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-7781?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.