THREATPORT/VULNERABILITY/CVE-2017-14117
MEDIUM SEVERITY

CVE-2017-14117

U Verse Firmware vulnerability

CVSS
5.9
EPSS
8.0%
EPSS pct
94th
Exploited
No known
The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG589 and NVG599 devices, when IP Passthrough mode is not used, configures an unauthenticated proxy service on WAN TCP port 49152, which allows remote attackers to establish arbitrary TCP connections to intranet hosts by sending \x2a\xce\x01 followed by other predictable values.
Affected vendor
Att
Affected product
U Verse Firmware
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness type (CWE)
  • CWE-287 — Improper Authentication
Published
2017-09-03

Risk analysis

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

Its EPSS score of 8.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2017-14117

  • Confirm whether Att U Verse Firmware is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-14117.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-14117

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-14117 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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