CVE-2020-15163
Invalid root may become trusted root in The Update Framework (TUF)
8.7
HIGH
CVSS 3.1
EPSS 0.14%
Description
Python TUF (The Update Framework) reference implementation before version 0.12 it will incorrectly trust a previously downloaded root metadata file which failed verification at download time. This allows an attacker who is able to serve multiple new versions of root metadata (i.e. by a person-in-the-middle attack) culminating in a version which has not been correctly signed to control the trust chain for future updates. This is fixed in version 0.12 and newer.
How to fix CVE-2020-15163
To remediate CVE-2020-15163, upgrade the affected package to a fixed version below.
- —upgrade to 0.12.0 or later
- —upgrade to 3d342e648fbacdf43a13d7ba8886aaaf07334af7 or later
Is CVE-2020-15163 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 0.12.0
- from 0, < 3d342e648fbacdf43a13d7ba8886aaaf07334af7 | from 0, < 0.12.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N |
| osv | CVSS 3.1 | HIGH8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |