Docker Sandboxes network egress allowlist bypass via unfiltered DNS resolution
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Docker | Docker Sandboxes | unaffected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Docker | Docker Sandboxes |
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No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.103% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Docker sandboxes
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Docker sandboxes
|
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| CPEs | cpe:2.3:a:docker:sandboxes:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Docker sandboxes
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Docker
Docker docker Sandboxes |
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| Vendors & Products |
Docker
Docker docker Sandboxes |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Docker Sandboxes (sbx) enforces an HTTP/S-only egress allowlist but does not apply it to DNS resolution: the per-network embedded DNS server forwards any queried name to the host resolver whenever the network is internet-connected, without consulting the policy. A workload inside a sandbox, which the threat model treats as untrusted, can therefore encode data into DNS labels for an attacker-controlled domain and exfiltrate it through a DNS covert channel, bypassing the configured allowlist. | |
| Title | Docker Sandboxes network egress allowlist bypass via unfiltered DNS resolution | |
| Weaknesses | CWE-923 | |
| References |
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| Metrics |
cvssV4_0
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