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CVE-2017-7781

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.

Published Jun 11, 2018EPSS 2.72%

Overview

CVE-2017-7781 is a medium-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.securityfocus.com/bid/100383Refwww.securitytracker.com/id/1039124Refbugzilla.mozilla.org/show_bug.cgi?id=1352039Refwww.mozilla.org/security/advisories/mfsa2017-18/Refwww.securityfocus.com/bid/100383Refwww.securitytracker.com/id/1039124Refbugzilla.mozilla.org/show_bug.cgi?id=1352039Refwww.mozilla.org/security/advisories/mfsa2017-18/

How CyberStrike helps

Frequently asked questions

What is CVE-2017-7781?

CVE-2017-7781 is a medium-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

How severe is CVE-2017-7781?

This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-7781?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-7781?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-7781 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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