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RedhatCVE-2021-3667

HistoryMar 02, 2022 - 11:15 p.m.

CVE-2021-3667

2022-03-0223:15:08

CWE-667

redhat

web.nvd.nist.gov

cve-2021-3667

improper locking

virstoragepoollookupbytargetpath

libvirt

denial of service

nvd

system availability

CVSS2

3.5

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.2

Confidence

High

EPSS

0.002

Percentile

61.4%

JSON

An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.

Affected configurations

Nvd

Vulners

Node

redhatlibvirtRange≤7.5.0

Node

redhatenterprise_linuxMatch8.0advanced_virtualization

Node

netappontap_select_deploy_administration_utilityMatch-

VendorProductVersionCPE
redhatlibvirt*cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*
redhatenterprise_linux8.0cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
netappontap_select_deploy_administration_utility-cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
redhat	libvirt	*	cpe:2.3:a:redhat:libvirt::::::::
redhat	enterprise_linux	8.0	cpe:2.3:o:redhat:enterprise_linux:8.0::::advanced_virtualization:::
netapp	ontap_select_deploy_administration_utility	-	cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:::::::*

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "libvirt",
    "versions": [
      {
        "version": "Fixedin - libvert v7.6.0-rc1 and above",
        "status": "affected"
      }
    ]
  }
]