THREATPORT/VULNERABILITY/CVE-2017-20005
CRITICAL SEVERITY

CVE-2017-20005

Nginx vulnerability

CVSS
9.8
EPSS
3.3%
EPSS pct
87th
Exploited
No known
NGINX before 1.13.6 has a buffer overflow for years that exceed four digits, as demonstrated by a file with a modification date in 1969 that causes an integer overflow (or a false modification date far in the future), when encountered by the autoindex module.
Affected vendor
F5
Affected product
Nginx
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-190 — Integer Overflow or Wraparound
  • CWE-120 — Classic Buffer Overflow
Published
2021-06-06

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 3.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2017-20005

  • Confirm whether F5 Nginx is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-20005.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-20005

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-20005 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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