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cve[email protected]CVE-2018-2475
HistoryOct 09, 2018 - 1:29 p.m.

CVE-2018-2475

2018-10-0913:29:02
web.nvd.nist.gov
35
gardener
kubernetes
apiserver
network isolation
security
exploitation
nvd
cve-2018-2475

6 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

8.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

8.2 High

AI Score

Confidence

High

0.004 Low

EPSS

Percentile

73.7%

Following the Gardener architecture, the Kubernetes apiserver of a Gardener managed shoot cluster resides in the corresponding seed cluster. Due to missing network isolation a shoot’s apiserver can access services/endpoints in the private network of its corresponding seed cluster. Combined with other minor Kubernetes security issues, the missing network isolation theoretically can lead to compromise other shoot or seed clusters in the β€œGardener” context. The issue is rated high due to the high impact of a potential exploitation in β€œGardener” context. This was fixed in Gardener release 0.12.4.

Affected configurations

NVD
Node
gardenergardenerRange<0.12.4
CPENameOperatorVersion
gardener:gardenergardenerlt0.12.4

CNA Affected

[
  {
    "product": "project β€œGardener”",
    "vendor": "SAP",
    "versions": [
      {
        "lessThan": "0.12.4",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

6 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

8.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

8.2 High

AI Score

Confidence

High

0.004 Low

EPSS

Percentile

73.7%

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