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RedhatCVE-2021-20197

HistoryMar 26, 2021 - 5:15 p.m.

CVE-2021-20197

2021-03-2617:15:12

CWE-362

CWE-59

redhat

web.nvd.nist.gov

138

cve-2021-20197

gnu binutils

utilities

race window

ownership

arbitrary files.

CVSS2

3.3

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

6.3

Confidence

High

EPSS

Percentile

15.5%

JSON

There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.

Affected configurations

Nvd

Vulners

Node

gnubinutilsRange≤2.35

Node

redhatenterprise_linuxMatch8.0

Node

netappcloud_backupMatch-

netappontap_select_deploy_administration_utilityMatch-

netappsolidfire_\&_hci_management_nodeMatch-

broadcombrocade_fabric_operating_system_firmwareMatch-

VendorProductVersionCPE
gnubinutils*cpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:*
redhatenterprise_linux8.0cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
netappcloud_backup-cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
netappontap_select_deploy_administration_utility-cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
netappsolidfire_\&_hci_management_node-cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*
broadcombrocade_fabric_operating_system_firmware-cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
gnu	binutils	*	cpe:2.3:a:gnu:binutils::::::::
redhat	enterprise_linux	8.0	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
netapp	cloud_backup	-	cpe:2.3:a:netapp:cloud_backup:-:::::::*
netapp	ontap_select_deploy_administration_utility	-	cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:::::::*
netapp	solidfire_\&_hci_management_node	-	cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:::::::*
broadcom	brocade_fabric_operating_system_firmware	-	cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:::::::*

CNA Affected

[
  {
    "product": "binutils",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "binutils 2.35"
      }
    ]
  }
]