CRITICAL SEVERITY

CVE-2017-5404

Debian Linux vulnerability

CVSS
9.8
EPSS
17.5%
EPSS pct
97th
Exploited
No known
A use-after-free error can occur when manipulating ranges in selections with one node inside a native anonymous tree and one node outside of it. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
Affected vendor
Debian
Affected product
Debian Linux
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2018-06-11

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 17.5% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2017-5404

  • Confirm whether Debian Debian Linux is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-5404.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-5404

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