THREATPORT/VULNERABILITY/CVE-2018-20685
MEDIUM SEVERITY

CVE-2018-20685

Openssh vulnerability

CVSS
5.3
EPSS
3.7%
EPSS pct
89th
Exploited
No known
In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.
Affected vendor
Openbsd
Affected product
Openssh
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness type (CWE)
  • CWE-863 — Incorrect Authorization
Published
2019-01-10

Risk analysis

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

Its EPSS score of 3.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2018-20685

  • Confirm whether Openbsd Openssh is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-20685.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-20685

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-20685 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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