CVE-2020-13597
LOWCVE-2020-13597 is a low-severity (CVSS 3.5) CWE-201 vulnerability in github.com/projectcalico/calico. O3 Security confirms whether CVE-2020-13597 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Exposure of Sensitive Information to an Unauthorized Actor and Insertion of Sensitive Information Into Sent Data in Calico
Real-World Exposure
github.com/projectcalico/calico🐹github.com/projectcalico/calico🐹github.com/projectcalico/calico🐹github.com/projectcalico/calico🐹github.com/projectcalico/calico🐹github.com/projectcalico/calico🐹github.com/projectcalico/calicoReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
Clusters using Calico (version 3.14.0 and below), Calico Enterprise (version 2.8.2 and below), may be vulnerable to information disclosure if IPv6 is enabled but unused. A compromised pod with sufficient privilege is able to reconfigure the node’s IPv6 interface due to the node accepting route advertisement by default, allowing the attacker to redirect full or partial network traffic from the node to the compromised pod.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/projectcalico/calico | ≥ 3.14.0&&< 3.14.1 | 3.14.1 |
| 🐹Go | github.com/projectcalico/calico | ≥ 3.13.0&&< 3.13.4 | 3.13.4 |
| 🐹Go | github.com/projectcalico/calico | ≥ 3.12.0&&< 3.12.2 | 3.12.2 |
| 🐹Go | github.com/projectcalico/calico | ≥ 3.11.0&&< 3.11.3 | 3.11.3 |
| 🐹Go | github.com/projectcalico/calico | ≥ 3.10.0&&< 3.10.4 | 3.10.4 |
| 🐹Go | github.com/projectcalico/calico | ≥ 3.9.0&&< 3.9.6 | 3.9.6 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/projectcalico/calico. 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.
Fix
Update github.com/projectcalico/calico to 3.14.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-13597 is resolved across your whole dependency graph.
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.
How O3 protects you
O3 pinpoints whether CVE-2020-13597 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 CVE-2020-13597. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2020-13597 in your dependencies?
O3 detects CVE-2020-13597 across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.