CVE-2020-15163
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 3 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0 |
| sid | Fixed | 0 |
| forky | Fixed | 0 |
References
- https://github.com/theupdateframework/tuf/security/advisories/GHSA-f8mr-jv2c-v8mg
- https://nvd.nist.gov/vuln/detail/CVE-2020-15163
- https://github.com/theupdateframework/tuf/pull/885
- https://github.com/theupdateframework/tuf/commit/3d342e648fbacdf43a13d7ba8886aaaf07334af7
- https://github.com/pypa/advisory-database/tree/main/vulns/tuf/PYSEC-2020-145.yaml
- https://github.com/theupdateframework/tuf
- https://github.com/theupdateframework/tuf/releases/tag/v0.12.0
- https://pypi.org/project/tuf
- https://security-tracker.debian.org/tracker/CVE-2020-15163
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.