Is CVE-2017-7781 in the CISA KEV catalog?

No. CVE-2017-7781 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-7781?

CVE-2017-7781 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2017-7781?

CVE-2017-7781 has an EPSS score of 2.76% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-7781?

Upgrade firefox on debian unstable to 55.0-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2017-7781

MEDIUMEPSS 84th pctl

5.9

CVSS v3

NVD

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.

How to fix

Remediation Available

firefoxDebian

Fixed in:55.0-1CVE-2017-7781

firefoxUbuntu

Fixed in:55.0.1+build2-0ubuntu0.14.04.2USN-3391-1

Fixed in:55.0.1+build2-0ubuntu0.16.04.2USN-3391-1

DeveloperEditionWindows application

Affected:55.0Fixed in:55.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:55.0Fixed in:55.0Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

2.76%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Exploit1

bugzilla.mozilla.org

Vendor Advisory1

mozilla.org

Third-Party Advisory2

Embed a live status badge for CVE-2017-7781

Markdown

[![CVE-2017-7781](https://tridentstack.com/cve/badge/CVE-2017-7781.svg)](https://tridentstack.com/cve/CVE-2017-7781)

HTML

<a href="https://tridentstack.com/cve/CVE-2017-7781"><img src="https://tridentstack.com/cve/badge/CVE-2017-7781.svg" alt="CVE-2017-7781"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.