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cve[email protected]CVE-2021-3499
HistoryJun 02, 2021 - 4:15 p.m.

CVE-2021-3499

2021-06-0216:15:10
CWE-863
web.nvd.nist.gov
68
4
cve-2021-3499
vulnerability
ovn kubernetes
egress firewall
firewall rules
dns rules
confidentiality
integrity
availability
nvd

5.6 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

5.4 Medium

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

39.5%

A vulnerability was found in OVN Kubernetes in versions up to and including 0.3.0 where the Egress Firewall does not reliably apply firewall rules when there is multiple DNS rules. It could lead to potentially lose of confidentiality, integrity or availability of a service.

Affected configurations

Vulners
NVD
Node
kuberneteskubernetesRange0.3.0
VendorProductVersionCPE
kuberneteskubernetes*cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "openshift/ovn-kubernetes",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "All ovn-kubernetes versions up to and including 0.3.0"
      }
    ]
  }
]

Social References

More

5.6 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

5.4 Medium

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

39.5%