CVE-2018-20685
openssh - security update
5.3
MEDIUM
CVSS 3.1
EPSS 3.4%
Description
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.
How to fix CVE-2018-20685
To remediate CVE-2018-20685, upgrade the affected package to a fixed version below.
- Alpine/dropbear—upgrade to 2019.78-r1 or later
- —upgrade to 7.9_p1-r3 or later
- —upgrade to 1:7.9p1-5 or later
- —upgrade to 1:6.7p1-5+deb8u8 or later
- —upgrade to 1:7.4p1-10+deb9u5 or later
Is CVE-2018-20685 being exploited?
Low — EPSS is 3.4%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- from 0, < 2019.78-r1
- from 0, < 7.9_p1-r3
- from 0, < 1:7.9p1-5
- from 0, < 1:6.7p1-5+deb8u8
- from 0, < 1:7.4p1-10+deb9u5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N |