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[email protected]CVE-2020-8933

HistoryJun 22, 2020 - 2:15 p.m.

CVE-2020-8933

2020-06-2214:15:11

CWE-276

[email protected]

web.nvd.nist.gov

135

google cloud platform

guest-oslogin

vulnerability

privilege escalation

cve-2020-8933

nvd

6.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.3 High

CVSS4

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/SC:H/VI:H/SI:H/VA:H/SA:H

7.5 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

33.4%

JSON

A vulnerability in Google Cloud Platform’s guest-oslogin versions between 20190304 and 20200507 allows a user that is only granted the role “roles/compute.osLogin” to escalate privileges to root. Using the membership to the “lxd” group, an attacker can attach host devices and filesystems. Within an lxc container, it is possible to attach the host OS filesystem and modify /etc/sudoers to then gain administrative privileges. All images created after 2020-May-07 (20200507) are fixed, and if you cannot update, we recommend you edit /etc/group/security.conf and remove the “lxd” user from the OS Login entry.

Affected configurations

NVD

Node

googleguest-osloginRange20190304.00–20200507.00

Node

opensuseleapMatch15.1

opensuseleapMatch15.2

CPENameOperatorVersion
google:guest-oslogingoogle guest-osloginle20200507.00

CPE	Name	Operator	Version
google:guest-oslogin	google guest-oslogin	le	20200507.00

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "guest-oslogin",
    "vendor": "Google LLC",
    "versions": [
      {
        "lessThan": "20200507",
        "status": "affected",
        "version": "20190304",
        "versionType": "date"
      },
      {
        "status": "unaffected",
        "version": "20200507",
        "versionType": "date"
      }
    ]
  }
]