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GHSA-pwqf-9h7j-7mv8

CRITICAL

GHSA-pwqf-9h7j-7mv8 is a critical-severity (CVSS 9.8) CWE-347 vulnerability in tuf. O3 Security confirms whether GHSA-pwqf-9h7j-7mv8 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Incorrect threshold signature computation in TUF

Also known asCVE-2020-6174PYSEC-2020-147
Published
Aug 21, 2020
Updated
Nov 18, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🐍tuf

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

Impact

Metadadata signature verification, as used in tuf.client.updater, counted each of multiple signatures with identical authorized keyids separately towards the threshold. Therefore, an attacker with access to a valid signing key could create multiple valid signatures in order to meet the minimum threshold of keys before the metadata was considered valid.

The tuf maintainers would like to thank Erik MacLean of Analog Devices, Inc. for reporting this issue.

Patches

A fix is available in version 0.12.2 or newer.

Workarounds

No workarounds are known for this issue.

References

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPItufall versions0.12.2

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for tuf. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update tuf to 0.12.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-pwqf-9h7j-7mv8 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-pwqf-9h7j-7mv8 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-pwqf-9h7j-7mv8. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact Metadadata signature verification, as used in `tuf.client.updater`, counted each of multiple signatures with identical authorized keyids separately towards the threshold. Therefore, an attacker with access to a valid signing key could create multiple valid signatures in order to meet the minimum threshold of keys before the metadata was considered valid. The tuf maintainers would like to thank Erik MacLean of Analog Devices, Inc. for reporting this issue. ### Patches A [fix](https://github.com/theupdateframework/tuf/pull/974) is available in version [0.12.2](https://github.com/th
O3 Security · Impact-Aware SCA

Is GHSA-pwqf-9h7j-7mv8 in your dependencies?

O3 detects GHSA-pwqf-9h7j-7mv8 across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.