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Linux Kernel におけるバッファエラーの脆弱性
Title Linux Kernel におけるバッファエラーの脆弱性
Summary

Linux Kernel には、バッファエラーの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 Dec. 20, 2017, midnight
Registration Date Jan. 22, 2018, 4:30 p.m.
Last Update Jan. 22, 2018, 4:30 p.m.
CVSS3.0 : 重要
Score 7.8
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS2.0 : 危険
Score 7.2
Vector AV:L/AC:L/Au:N/C:C/I:C/A:C
Affected System
Debian
Debian GNU/Linux 9.0
SUSE
SUSE Linux Enterprise Desktop 12-SP2
SUSE Linux Enterprise Desktop 12-SP3
SUSE Linux Enterprise Server 11-EXTRA
SUSE Linux Enterprise Server 11-SP4
SUSE Linux Enterprise Server 12-SP2
SUSE Linux Enterprise Server 12-SP3
SUSE Linux Enterprise Server for Raspberry Pi 12-SP2
openSUSE project
openSUSE Leap 42.2
openSUSE Leap 42.3
Linux
Linux Kernel 4.14.8 未満
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
Change Log
No Changed Details Date of change
0 [2018年01月22日]
  掲載		 Feb. 17, 2018, 10:37 a.m.
NVD Vulnerability Information
CVE-2017-17806
Summary

The HMAC implementation (crypto/hmac.c) in the Linux kernel before 4.14.8 does not validate that the underlying cryptographic hash algorithm is unkeyed, allowing a local attacker able to use the AF_ALG-based hash interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash algorithm (CONFIG_CRYPTO_SHA3) to cause a kernel stack buffer overflow by executing a crafted sequence of system calls that encounter a missing SHA-3 initialization.

Publication Date Dec. 21, 2017, 8:29 a.m.
Registration Date Jan. 26, 2021, 1:19 p.m.
Last Update Nov. 21, 2024, 12:18 p.m.
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 3.2.97
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 3.3 3.16.52
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 3.17 3.18.89
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 3.19 4.1.49
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.2 4.4.107
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.5 4.9.71
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.10 4.14.8
Configuration2 or higher or less more than less than
cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_server:11:extra:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_desktop:12:sp2:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse_project:leap:42.3:*:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_server_for_raspberry_pi:12:sp2:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_server:12:sp2:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_desktop:12:sp3:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_server:12:sp3:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
Related information, measures and tools
Common Vulnerabilities List