NVD脆弱性詳細

CVE-2018-0732

概要	During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).
公表日	2018年6月12日22:29
登録日	2021年1月26日10:40
最終更新日	2024年11月21日12:38

CVSS3.1 : HIGH
スコア	7.5
ベクター	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	低
攻撃に必要な特権レベル(PR)	不要
利用者の関与(UI)	不要
影響の想定範囲(S)	変更なし
機密性への影響(C)	なし
完全性への影響(I)	なし
可用性への影響(A)	高

CVSS2.0 : MEDIUM
スコア	5.0
ベクター	AV:N/AC:L/Au:N/C:N/I:N/A:P
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	低
攻撃前の認証要否(Au)	不要
機密性への影響(C)	なし
完全性への影響(I)	なし
可用性への影響(A)	低
全ての特権を取得	いいえ
ユーザー権限を取得	いいえ
その他の権限を取得	いいえ
ユーザー操作が必要	いいえ

影響を受けるソフトウェアの構成

構成1	以上	以下	より上	未満
cpe:2.3:a:openssl:openssl::::::::	1.1.0	1.1.0h
cpe:2.3:a:openssl:openssl::::::::	1.0.2	1.0.2o

構成2	以上	以下	より上	未満
cpe:2.3:o:debian:debian_linux:8.0:::::::*
cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:12.04::::esm:::
cpe:2.3:o:canonical:ubuntu_linux:17.10:::::::*
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::

構成3	以上	以下	より上	未満
cpe:2.3:a:nodejs:node.js:::::lts:::*	8.9.0			8.11.4
cpe:2.3:a:nodejs:node.js:::::-:::*	8.0.0			8.8.1
cpe:2.3:a:nodejs:node.js:::::-:::*	10.0.0			10.9.0
cpe:2.3:a:nodejs:node.js:::::lts:::*	6.9.0			6.14.4
cpe:2.3:a:nodejs:node.js:::::-:::*	6.0.0			6.8.1

関連情報、対策とツール

No	URL	タグ
1	http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html	Patch Third Party Advisory
2	http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html	Patch Third Party Advisory
3	http://www.securityfocus.com/bid/104442	Third Party Advisory VDB Entry
4	http://www.securityfocus.com/bid/104442	Third Party Advisory VDB Entry
5	http://www.securitytracker.com/id/1041090	Third Party Advisory VDB Entry
6	http://www.securitytracker.com/id/1041090	Third Party Advisory VDB Entry
7	https://access.redhat.com/errata/RHSA-2018:2552	Third Party Advisory
8	https://access.redhat.com/errata/RHSA-2018:2552	Third Party Advisory
9	https://access.redhat.com/errata/RHSA-2018:2553	Third Party Advisory
10	https://access.redhat.com/errata/RHSA-2018:2553	Third Party Advisory
11	https://access.redhat.com/errata/RHSA-2018:3221	Third Party Advisory
12	https://access.redhat.com/errata/RHSA-2018:3221	Third Party Advisory
13	https://access.redhat.com/errata/RHSA-2018:3505	Third Party Advisory
14	https://access.redhat.com/errata/RHSA-2018:3505	Third Party Advisory
15	https://access.redhat.com/errata/RHSA-2019:1296	Third Party Advisory
16	https://access.redhat.com/errata/RHSA-2019:1296	Third Party Advisory
17	https://access.redhat.com/errata/RHSA-2019:1297	Third Party Advisory
18	https://access.redhat.com/errata/RHSA-2019:1297	Third Party Advisory
19	https://access.redhat.com/errata/RHSA-2019:1543	Third Party Advisory
20	https://access.redhat.com/errata/RHSA-2019:1543	Third Party Advisory
21	https://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf	Third Party Advisory
22	https://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf	Third Party Advisory
23	https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=3984ef0b72831da8b3ece4745cac4f8575b19098
24	https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=3984ef0b72831da8b3ece4745cac4f8575b19098
25	https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=ea7abeeabf92b7aca160bdd0208636d4da69f4f4
26	https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=ea7abeeabf92b7aca160bdd0208636d4da69f4f4
27	https://lists.debian.org/debian-lts-announce/2018/07/msg00043.html	Third Party Advisory
28	https://lists.debian.org/debian-lts-announce/2018/07/msg00043.html	Third Party Advisory
29	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/
30	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/
31	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/
32	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/
33	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/
34	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/
35	https://nodejs.org/en/blog/vulnerability/august-2018-security-releases/	Vendor Advisory
36	https://nodejs.org/en/blog/vulnerability/august-2018-security-releases/	Vendor Advisory
37	https://security.gentoo.org/glsa/201811-03	Third Party Advisory
38	https://security.gentoo.org/glsa/201811-03	Third Party Advisory
39	https://security.netapp.com/advisory/ntap-20181105-0001/	Third Party Advisory
40	https://security.netapp.com/advisory/ntap-20181105-0001/	Third Party Advisory
41	https://security.netapp.com/advisory/ntap-20190118-0002/	Third Party Advisory
42	https://security.netapp.com/advisory/ntap-20190118-0002/	Third Party Advisory
43	https://securityadvisories.paloaltonetworks.com/Home/Detail/133	Third Party Advisory
44	https://securityadvisories.paloaltonetworks.com/Home/Detail/133	Third Party Advisory
45	https://usn.ubuntu.com/3692-1/	Third Party Advisory
46	https://usn.ubuntu.com/3692-1/	Third Party Advisory
47	https://usn.ubuntu.com/3692-2/	Third Party Advisory
48	https://usn.ubuntu.com/3692-2/	Third Party Advisory
49	https://www.debian.org/security/2018/dsa-4348	Third Party Advisory
50	https://www.debian.org/security/2018/dsa-4348	Third Party Advisory
51	https://www.debian.org/security/2018/dsa-4355	Third Party Advisory
52	https://www.debian.org/security/2018/dsa-4355	Third Party Advisory
53	https://www.openssl.org/news/secadv/20180612.txt	Vendor Advisory
54	https://www.openssl.org/news/secadv/20180612.txt	Vendor Advisory
55	https://www.oracle.com/security-alerts/cpuapr2020.html	Third Party Advisory
56	https://www.oracle.com/security-alerts/cpuapr2020.html	Third Party Advisory
57	https://www.oracle.com/security-alerts/cpujan2021.html	Third Party Advisory
58	https://www.oracle.com/security-alerts/cpujan2021.html	Third Party Advisory
59	https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html	Patch Third Party Advisory
60	https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html	Patch Third Party Advisory
61	https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html	Patch Third Party Advisory
62	https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html	Patch Third Party Advisory
63	https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html	Patch Third Party Advisory
64	https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html	Patch Third Party Advisory
65	https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html	Patch Third Party Advisory
66	https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html	Patch Third Party Advisory
67	https://www.tenable.com/security/tns-2018-12	Third Party Advisory
68	https://www.tenable.com/security/tns-2018-12	Third Party Advisory
69	https://www.tenable.com/security/tns-2018-13	Third Party Advisory
70	https://www.tenable.com/security/tns-2018-13	Third Party Advisory
71	https://www.tenable.com/security/tns-2018-14	Third Party Advisory
72	https://www.tenable.com/security/tns-2018-14	Third Party Advisory
73	https://www.tenable.com/security/tns-2018-17	Third Party Advisory
74	https://www.tenable.com/security/tns-2018-17	Third Party Advisory

共通脆弱性一覧

No	CWE	名前	URL
1	CWE-320	鍵管理のエラー	https://cwe.mitre.org/data/definitions/320.html

JVN脆弱性情報

OpenSSL におけるサービス運用妨害 (DoS) の脆弱性

タイトル	OpenSSL におけるサービス運用妨害 (DoS) の脆弱性
概要	OpenSSL には、DH(E) ベースの暗号スイートを使用する TLS ハンドシェイクの鍵共有 (key agreement) の際に、サービス運用妨害 (DoS) 状態にされる脆弱性が存在します。
想定される影響	悪意のあるサーバにより、鍵生成に非常に時間がかかるような過度に大きいプライム値 (prime value) をクライアントに送信されることで、サービス運用妨害 (DoS) 状態にされる可能性があります。
対策	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。
公表日	2018年6月12日0:00
登録日	2018年8月24日17:44
最終更新日	2018年8月24日17:44

影響を受けるシステム

OpenSSL Project

OpenSSL 1.0.2 から 1.0.2o

OpenSSL 1.1.0 から 1.1.0h

Debian

Debian GNU/Linux

Canonical

Ubuntu

CVE (情報セキュリティ共通脆弱性識別子)

No	名前	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2018-0732	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0732
National Vulnerability Database (NVD)
2	CVE-2018-0732	https://nvd.nist.gov/vuln/detail/CVE-2018-0732

CWE (共通脆弱性タイプ一覧)

No	名前	URL
JVNDB
1	CWE-320	https://cwe.mitre.org/data/definitions/320.html

ベンダー情報

No	名前	URL
Debian
1	[SECURITY] [DLA 1449-1] openssl security update	https://lists.debian.org/debian-lts-announce/2018/07/msg00043.html
OpenSSL Project
2	Reject excessively large primes in DH key generation.(3984ef0)	https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=3984ef0b72831da8b3ece4745cac4f8575b19098
3	Reject excessively large primes in DH key generation.(ea7abee)	https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=ea7abeeabf92b7aca160bdd0208636d4da69f4f4
OpenSSL Security Advisory
4	Client DoS due to large DH parameter (CVE-2018-0732)	https://www.openssl.org/news/secadv/20180612.txt
Ubuntu Security Notice
5	USN-3692-1	https://usn.ubuntu.com/3692-1/
6	USN-3692-2	https://usn.ubuntu.com/3692-2/

その他

No	名前	URL
JVN
1	JVNVU#95781418	https://jvn.jp/vu/JVNVU95781418/index.html

変更履歴

No	変更内容	変更日
1	[2018年08月24日] 掲載	2018年8月24日17:44
2	[2021年06月10日] 参考情報：JVN (JVNVU#95781418) を追加	2021年6月10日13:52

構成2	以上	以下	より上	未満
cpe:2.3:o:debian:debian_linux:8.0:::::::*
cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:12.04::::esm:::
cpe:2.3:o:canonical:ubuntu_linux:17.10:::::::*
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::