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OpenSSH における二重解放に関する脆弱性
Title OpenSSH における二重解放に関する脆弱性
Summary

OpenSSH には、二重解放に関する脆弱性が存在します。

Possible impacts 情報を取得される、情報を改ざんされる、およびサービス運用妨害 (DoS) 状態にされる可能性があります。
Solution

ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date March 3, 2021, midnight
Registration Date Nov. 9, 2021, 11:17 a.m.
Last Update Nov. 9, 2021, 11:17 a.m.
CVSS3.0 : 重要
Score 7.1
Vector CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS2.0 : 警告
Score 4.6
Vector AV:N/AC:H/Au:S/C:P/I:P/A:P
Affected System
OpenBSD
OpenSSH 8.5 未満
Fedora Project
Fedora 
NetApp
NetApp Cloud Backup 
NetApp HCI Compute Node ファームウェア 
NetApp HCI Management Node 
NetApp HCI Storage Node ファームウェア 
NetApp SolidFire 
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
その他
Change Log
No Changed Details Date of change
1 [2021年11月09日]
  掲載		 Nov. 9, 2021, 11:17 a.m.
NVD Vulnerability Information
CVE-2021-28041
Summary

ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.

Publication Date March 6, 2021, 6:15 a.m.
Registration Date March 6, 2021, 10:03 a.m.
Last Update Nov. 21, 2024, 2:59 p.m.
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* 8.2 8.5
Configuration2 or higher or less more than less than
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:netapp:hci_compute_node_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:netapp:hci_storage_node_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:oracle:zfs_storage_appliance:8.8:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List