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.
References
CvssV3 impact
BaseSeverity | HIGH |
ConfidentialityImpact | HIGH |
AttackComplexity | HIGH |
Scope | CHANGED |
AttackVector | NETWORK |
AvailabilityImpact | NONE |
IntegrityImpact | HIGH |
PrivilegesRequired | LOW |
BaseScore | 8.2 |
VectorString | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N |
Version | 3.1 |
UserInteraction | NONE |
CvssV2 impact
AccessComplexity | MEDIUM |
ConfidentialityImpact | PARTIAL |
AvailabilityImpact | NONE |
IntegrityImpact | PARTIAL |
BaseScore | 4.9 |
VectorString | AV:N/AC:M/Au:S/C:P/I:P/A:N |
Version | 2.0 |
AccessVector | NETWORK |
Authentication | SINGLE |