Ubuntu 18.04 LTS / 20.04 LTS:Linuxカーネル脆弱性(USN-5017-1)

high Nessus プラグイン ID 153129

概要

リモートUbuntuホストに1つ以上のセキュリティ更新がありません。

説明

リモートのUbuntu 18.04 LTS/20.04 LTSホストには、USN-5017-1のアドバイザリに記載された複数の脆弱性の影響を受けるパッケージがインストールされています。

- Bluetooth Core Specification 2.1〜5.2のBluetooth LEおよびBR/EDRセキュアペアリングにより、近隣の中間攻撃者が、公開鍵の反映および開始デバイスの認証証拠により、(Passkey認証手順の)ペアリング中に使用されたPasskeyを識別する可能性があります。このため、この攻撃者は、ペアリングセッションの正しいパスキーを使用して、応答デバイスとの認証されたペアリングを完了する可能性があります。この攻撃方法により、Passkeyの値が一度に1ビットに決定されます。(CVE-2020-26558)

-BlueZの不適切なアクセス制御により、認証されたユーザーが隣接アクセスを介した情報開示を可能にする可能性があります。(CVE-2021-0129)

- 3.16から5.13.4より前の5.13.xまでのLinuxカーネルのfs/seq_file.cは、seqバッファ割り当てを適切に制限しないため、整数オーバーフロー、領域外書き込み、権限のないユーザーのrootへの昇格が引き起こされます(別名CID-8cae8cd89f05)。(CVE-2021-33909)

Nessusはこの問題をテストしておらず、代わりにアプリケーションの自己報告されたバージョン番号にのみ依存しています。

ソリューション

影響を受けるパッケージを更新してください。

関連情報

https://ubuntu.com/security/notices/USN-5017-1

プラグインの詳細

深刻度: High

ID: 153129

ファイル名: ubuntu_USN-5017-1.nasl

バージョン: 1.3

タイプ: local

エージェント: unix

公開日: 2021/9/8

更新日: 2021/9/9

サポートされているセンサー: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

リスク情報

VPR

リスクファクター: Critical

スコア: 9.5

CVSS v2

リスクファクター: High

Base Score: 7.2

Temporal Score: 6.3

ベクトル: AV:L/AC:L/Au:N/C:C/I:C/A:C

現状ベクトル: E:H/RL:OF/RC:C

CVSS スコアのソース: CVE-2021-33909

CVSS v3

リスクファクター: High

Base Score: 7.8

Temporal Score: 7.5

ベクトル: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

現状ベクトル: E:H/RL:O/RC:C

脆弱性情報

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:block-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:block-modules-5.4.0-80-generic-lpae-di, p-cpe:/a:canonical:ubuntu_linux:crypto-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:crypto-modules-5.4.0-80-generic-lpae-di, p-cpe:/a:canonical:ubuntu_linux:dasd-extra-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:dasd-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:fat-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:fat-modules-5.4.0-80-generic-lpae-di, p-cpe:/a:canonical:ubuntu_linux:fb-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:firewire-core-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:floppy-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:fs-core-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:fs-core-modules-5.4.0-80-generic-lpae-di, p-cpe:/a:canonical:ubuntu_linux:fs-secondary-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:fs-secondary-modules-5.4.0-80-generic-lpae-di, p-cpe:/a:canonical:ubuntu_linux:input-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:input-modules-5.4.0-80-generic-lpae-di, p-cpe:/a:canonical:ubuntu_linux:ipmi-modules-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:ipmi-modules-5.4.0-80-generic-lpae-di, p-cpe:/a:canonical:ubuntu_linux:kernel-image-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:kernel-image-5.4.0-80-generic-lpae-di, p-cpe:/a:canonical:ubuntu_linux:kernel-signed-image-5.4.0-80-generic-di, p-cpe:/a:canonical:ubuntu_linux:linux-aws, p-cpe:/a:canonical:ubuntu_linux:linux-aws-5.4-cloud-tools-5.4.0-1054, p-cpe:/a:canonical:ubuntu_linux:linux-aws-5.4-headers-5.4.0-1054, p-cpe:/a:canonical:ubuntu_linux:linux-aws-5.4-tools-5.4.0-1054, p-cpe:/a:canonical:ubuntu_linux:linux-aws-cloud-tools-5.4.0-1054, p-cpe:/a:canonical:ubuntu_linux:linux-aws-edge, p-cpe:/a:canonical:ubuntu_linux:linux-aws-headers-5.4.0-1054, p-cpe:/a:canonical:ubuntu_linux:linux-aws-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-aws-tools-5.4.0-1054, p-cpe:/a:canonical:ubuntu_linux:linux-azure, p-cpe:/a:canonical:ubuntu_linux:linux-azure-5.4-cloud-tools-5.4.0-1055, p-cpe:/a:canonical:ubuntu_linux:linux-azure-5.4-headers-5.4.0-1055, p-cpe:/a:canonical:ubuntu_linux:linux-azure-5.4-tools-5.4.0-1055, p-cpe:/a:canonical:ubuntu_linux:linux-azure-cloud-tools-5.4.0-1055, p-cpe:/a:canonical:ubuntu_linux:linux-azure-edge, p-cpe:/a:canonical:ubuntu_linux:linux-azure-headers-5.4.0-1055, p-cpe:/a:canonical:ubuntu_linux:linux-azure-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-azure-tools-5.4.0-1055, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1021-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1041-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1044-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1049-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1049-gke, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1052-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1054-aws, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-1055-azure, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-80-generic, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-80-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-buildinfo-5.4.0-80-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-5.4.0-1021-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-5.4.0-1054-aws, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-5.4.0-1055-azure, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-5.4.0-80, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-5.4.0-80-generic, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-5.4.0-80-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-azure, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-azure-edge, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-azure-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-common, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-generic, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-generic-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-generic-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-gkeop-5.4, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-lowlatency-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-lowlatency-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-virtual-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-cloud-tools-virtual-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-crashdump, p-cpe:/a:canonical:ubuntu_linux:linux-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-gcp-5.4-headers-5.4.0-1049, p-cpe:/a:canonical:ubuntu_linux:linux-gcp-5.4-tools-5.4.0-1049, p-cpe:/a:canonical:ubuntu_linux:linux-gcp-edge, p-cpe:/a:canonical:ubuntu_linux:linux-gcp-headers-5.4.0-1049, p-cpe:/a:canonical:ubuntu_linux:linux-gcp-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-gcp-tools-5.4.0-1049, p-cpe:/a:canonical:ubuntu_linux:linux-generic, p-cpe:/a:canonical:ubuntu_linux:linux-generic-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-generic-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-generic-lpae-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-generic-lpae-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-gke, p-cpe:/a:canonical:ubuntu_linux:linux-gke-5.4, p-cpe:/a:canonical:ubuntu_linux:linux-gke-5.4-headers-5.4.0-1049, p-cpe:/a:canonical:ubuntu_linux:linux-gke-5.4-tools-5.4.0-1049, p-cpe:/a:canonical:ubuntu_linux:linux-gke-headers-5.4.0-1049, p-cpe:/a:canonical:ubuntu_linux:linux-gke-tools-5.4.0-1049, p-cpe:/a:canonical:ubuntu_linux:linux-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-gkeop-5.4, p-cpe:/a:canonical:ubuntu_linux:linux-gkeop-5.4-cloud-tools-5.4.0-1021, p-cpe:/a:canonical:ubuntu_linux:linux-gkeop-5.4-headers-5.4.0-1021, p-cpe:/a:canonical:ubuntu_linux:linux-gkeop-5.4-source-5.4.0, p-cpe:/a:canonical:ubuntu_linux:linux-gkeop-5.4-tools-5.4.0-1021, p-cpe:/a:canonical:ubuntu_linux:linux-gkeop-cloud-tools-5.4.0-1021, p-cpe:/a:canonical:ubuntu_linux:linux-gkeop-headers-5.4.0-1021, p-cpe:/a:canonical:ubuntu_linux:linux-gkeop-source-5.4.0, p-cpe:/a:canonical:ubuntu_linux:linux-gkeop-tools-5.4.0-1021, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1021-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1041-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1044-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1049-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1049-gke, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1052-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1054-aws, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-1055-azure, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-80, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-80-generic, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-80-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-headers-5.4.0-80-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-headers-aws, p-cpe:/a:canonical:ubuntu_linux:linux-headers-aws-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-aws-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-azure, p-cpe:/a:canonical:ubuntu_linux:linux-headers-azure-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-azure-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-headers-gcp-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-gcp-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-lpae-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-generic-lpae-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-gke, p-cpe:/a:canonical:ubuntu_linux:linux-headers-gke-5.4, p-cpe:/a:canonical:ubuntu_linux:linux-headers-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-headers-gkeop-5.4, p-cpe:/a:canonical:ubuntu_linux:linux-headers-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-headers-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-headers-lowlatency-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-lowlatency-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-oem, p-cpe:/a:canonical:ubuntu_linux:linux-headers-oem-osp1, p-cpe:/a:canonical:ubuntu_linux:linux-headers-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-headers-oracle-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-oracle-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-headers-raspi-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-raspi-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-headers-raspi2-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-raspi2-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-snapdragon-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-snapdragon-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-headers-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-headers-virtual-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-headers-virtual-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-cloud-tools-5.4.0-80, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-cloud-tools-common, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-headers-5.4.0-80, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-source-5.4.0, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-tools-5.4.0-80, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-tools-common, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-udebs-generic, p-cpe:/a:canonical:ubuntu_linux:linux-hwe-5.4-udebs-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1021-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1041-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1044-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1049-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1049-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1052-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1054-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1055-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-80-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-80-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-80-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-aws-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-aws-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-azure-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-azure-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-extra-virtual, p-cpe:/a:canonical:ubuntu_linux:linux-image-extra-virtual-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-extra-virtual-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-gke-5.4, p-cpe:/a:canonical:ubuntu_linux:linux-image-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-gkeop-5.4, p-cpe:/a:canonical:ubuntu_linux:linux-image-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-oem-osp1, p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle-lts-20.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon-hwe-18.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon-hwe-18.04-edge, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-1021-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-1044-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-1049-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-1049-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-1052-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-1055-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-unsigned-5.4.0-80-generic, 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必要な KB アイテム: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

エクスプロイトが利用可能: true

エクスプロイトの容易さ: Exploits are available

パッチ公開日: 2021/7/20

脆弱性公開日: 2021/5/24

参照情報

CVE: CVE-2020-26558, CVE-2021-0129, CVE-2021-33909

USN: 5017-1

IAVA: 2021-A-0350