QID 980046

QID 980046: Python (pip) Security Update for tuf (GHSA-f8mr-jv2c-v8mg)

Security update has been released for tuf to fix the vulnerability.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

The Python TUF reference implementation `tuf<0.12` 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 man-in-the-middle attack) culminating in a version which has not been correctly signed to control the trust chain for future updates.

While investigating the reported vulnerability, we discovered that the detailed client workflow was not fully implemented. Specifically, for step 1.3 the newly downloaded root metadata was not being verified with a threshold of keys specified in the new root metadata file.
This missing step of the client workflow has been implemented in [PR #1101](https://github.com/theupdateframework/tuf/pull/1101), which is included in [v0.14.0](https://github.com/theupdateframework/tuf/releases/tag/v0.14.0) of tuf.

CVSS V3 rated as Critical - 8.2 severity.

CVSS V2 rated as Medium - 4.9 severity.

Solution

A [fix](https://github.com/theupdateframework/tuf/pull/885), is available in version [0.12](https://github.com/theupdateframework/tuf/releases/tag/v0.12.0) and newer.Workaround:
No workarounds are known for this issue.

Vendor References

GHSA-f8mr-jv2c-v8mg - github.com/advisories/GHSA-f8mr-jv2c-v8mg

CVEs related to QID 980046

CVE-2020-15163 |

Software Advisories

Advisory ID	Software	Component	Link
GHSA-f8mr-jv2c-v8mg	tuf		github.com/advisories/GHSA-f8mr-jv2c-v8mg

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