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[email protected]CVE-2019-18837

HistoryNov 13, 2019 - 8:15 p.m.

CVE-2019-18837

2019-11-1320:15:10

CWE-59

[email protected]

web.nvd.nist.gov

cve-2019-18837

crun

image

symlink

container security

vulnerability

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

8.2 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

61.2%

JSON

An issue was discovered in crun before 0.10.5. With a crafted image, it doesn’t correctly check whether a target is a symlink, resulting in access to files outside of the container. This occurs in libcrun/linux.c and libcrun/chroot_realpath.c.

Affected configurations

NVD

Node

crun_projectcrunRange<0.10.5

Node

fedoraprojectfedoraMatch30

fedoraprojectfedoraMatch31

CPENameOperatorVersion
crun_project:cruncrun project crunlt0.10.5

CPE	Name	Operator	Version
crun_project:crun	crun project crun	lt	0.10.5

CNA Affected

[
  {
    "product": "crun",
    "vendor": "crun",
    "versions": [
      {
        "status": "affected",
        "version": "before 0.10.5"
      }
    ]
  }
]