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[email protected]CVE-2021-21686

HistoryNov 04, 2021 - 5:15 p.m.

CVE-2021-21686

2021-11-0417:15:08

CWE-59

[email protected]

web.nvd.nist.gov

111

cve-2021-21686

jenkins

security

subsystem

path filters

symbolic links

nvd

5.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

8.6 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

51.8%

JSON

File path filters in the agent-to-controller security subsystem of Jenkins 2.318 and earlier, LTS 2.303.2 and earlier do not canonicalize paths, allowing operations to follow symbolic links to outside allowed directories.

Affected configurations

NVD

Node

jenkinsjenkinsRange<2.303.3lts

jenkinsjenkinsRange<2.319-

CPENameOperatorVersion
jenkins:jenkinsjenkinslt2.303.3
jenkins:jenkinsjenkinslt2.319

CPE	Name	Operator	Version
jenkins:jenkins	jenkins	lt	2.303.3
jenkins:jenkins	jenkins	lt	2.319

CNA Affected

[
  {
    "product": "Jenkins",
    "vendor": "Jenkins project",
    "versions": [
      {
        "lessThanOrEqual": "2.318",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "LTS 2.303.2",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]