NVD脆弱性詳細

CVE-2023-51766

概要	Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Exim supports <LF>.<CR><LF> but some other popular e-mail servers do not.
公表日	2023年12月24日15:15
登録日	2023年12月25日10:00
最終更新日	2024年11月21日17:38

CVSS3.1 : MEDIUM
スコア	5.3
ベクター	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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)	低
可用性への影響(A)	なし

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:exim:exim::::::::					4.97.1

構成2	以上	以下	より上	未満
cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:8.0:::::::*
cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:9.0:::::::*
cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:7.0:::::::*
cpe:2.3:o:fedoraproject:fedora:38:::::::*
cpe:2.3:o:fedoraproject:fedora:39:::::::*

構成3		以上	以下	より上	未満
cpe:2.3:o:debian:debian_linux:10.0:::::::*

関連情報、対策とツール

No	URL	タグ
1	http://www.openwall.com/lists/oss-security/2023/12/24/1	Mailing List Third Party Advisory
2	http://www.openwall.com/lists/oss-security/2023/12/24/1	Mailing List Third Party Advisory
3	http://www.openwall.com/lists/oss-security/2023/12/25/1	Mailing List Third Party Advisory
4	http://www.openwall.com/lists/oss-security/2023/12/25/1	Mailing List Third Party Advisory
5	http://www.openwall.com/lists/oss-security/2023/12/29/2	Mailing List Mitigation Third Party Advisory
6	http://www.openwall.com/lists/oss-security/2023/12/29/2	Mailing List Mitigation Third Party Advisory
7	http://www.openwall.com/lists/oss-security/2024/01/01/1	Mailing List Third Party Advisory
8	http://www.openwall.com/lists/oss-security/2024/01/01/1	Mailing List Third Party Advisory
9	http://www.openwall.com/lists/oss-security/2024/01/01/2	Mailing List Third Party Advisory
10	http://www.openwall.com/lists/oss-security/2024/01/01/2	Mailing List Third Party Advisory
11	http://www.openwall.com/lists/oss-security/2024/01/01/3	Mailing List Third Party Advisory
12	http://www.openwall.com/lists/oss-security/2024/01/01/3	Mailing List Third Party Advisory
13	https://bugs.exim.org/show_bug.cgi?id=3063	Issue Tracking Vendor Advisory
14	https://bugs.exim.org/show_bug.cgi?id=3063	Issue Tracking Vendor Advisory
15	https://bugzilla.redhat.com/show_bug.cgi?id=2255852	Issue Tracking Third Party Advisory
16	https://bugzilla.redhat.com/show_bug.cgi?id=2255852	Issue Tracking Third Party Advisory
17	https://exim.org/static/doc/security/CVE-2023-51766.txt	Broken Link
18	https://exim.org/static/doc/security/CVE-2023-51766.txt	Broken Link
19	https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html	Technical Description
20	https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html	Technical Description
21	https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca	Patch
22	https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca	Patch
23	https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5	Patch
24	https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5	Patch
25	https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766	Mitigation Vendor Advisory
26	https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766	Mitigation Vendor Advisory
27	https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html	Mailing List Third Party Advisory
28	https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html	Mailing List Third Party Advisory
29	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/	Mailing List Third Party Advisory
30	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/	Mailing List Third Party Advisory
31	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/	Mailing List Third Party Advisory
32	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/	Mailing List Third Party Advisory
33	https://lwn.net/Articles/956533/	Third Party Advisory
34	https://lwn.net/Articles/956533/	Third Party Advisory
35	https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/	Technical Description Third Party Advisory
36	https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/	Technical Description Third Party Advisory
37	https://www.openwall.com/lists/oss-security/2023/12/23/2	Issue Tracking Mailing List Third Party Advisory
38	https://www.openwall.com/lists/oss-security/2023/12/23/2	Issue Tracking Mailing List Third Party Advisory
39	https://www.youtube.com/watch?v=V8KPV96g1To	Exploit
40	https://www.youtube.com/watch?v=V8KPV96g1To	Exploit

共通脆弱性一覧

No	CWE	名前	URL
1	CWE-345	データの信頼性についての不十分な検証	https://cwe.mitre.org/data/definitions/345.html

JVN脆弱性情報

Exim Development の Exim 等複数ベンダの製品におけるデータの信頼性についての不十分な検証に関する脆弱性

タイトル	Exim Development の Exim 等複数ベンダの製品におけるデータの信頼性についての不十分な検証に関する脆弱性
概要	Exim Development の Exim 等複数ベンダの製品には、データの信頼性についての不十分な検証に関する脆弱性が存在します。
想定される影響	情報を改ざんされる可能性があります。
対策	ベンダアドバイザリまたはパッチ情報が公開されています。参考情報を参照して適切な対策を実施してください。
公表日	2023年12月24日0:00
登録日	2024年1月29日15:27
最終更新日	2024年1月29日15:27

影響を受けるシステム

Fedora Project

Extra Packages For Enterprise Linux 7.0

Extra Packages For Enterprise Linux 8.0

Extra Packages For Enterprise Linux 9.0

Fedora 38

Fedora 39

Exim Development

Exim 4.97.1 未満

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-2023-51766	https://www.cve.org/CVERecord?id=CVE-2023-51766
National Vulnerability Database (NVD)
2	CVE-2023-51766	https://nvd.nist.gov/vuln/detail/CVE-2023-51766

CWE (共通脆弱性タイプ一覧)

No	名前	URL
JVNDB
1	CWE-345	https://cwe.mitre.org/data/definitions/345.html

その他

No	名前	URL
JVN
1	JVNVU#94855660	https://jvn.jp/vu/JVNVU94855660/
関連文書
2	bugs.exim.org (3063)	https://bugs.exim.org/show_bug.cgi?id=3063
3	bugzilla.redhat.com (2255852)	https://bugzilla.redhat.com/show_bug.cgi?id=2255852
4	fahrplan.events.ccc.de (11782)	https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html
5	git.exim.org (5bb786d5ad568a88d50d15452aacc8404047e5ca)	https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca
6	git.exim.org (cf1376206284f2a4f11e32d931d4aade34c206c5)	https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5
7	github.com (cve-2023-51766)	https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766
8	lists.debian.org (msg00002)	https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html
9	lists.fedoraproject.org (ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB)	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/
10	lists.fedoraproject.org (QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ)	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/
11	lwn.net (Articles/956533)	https://lwn.net/Articles/956533/
12	sec-consult.com (smtp-smuggling-spoofing-e-mails-worldwide)	https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/
13	www.openwall.com (oss-security/2023/12/23/2)	https://www.openwall.com/lists/oss-security/2023/12/23/2
14	www.openwall.com (oss-security/2023/12/24/1)	http://www.openwall.com/lists/oss-security/2023/12/24/1
15	www.openwall.com (oss-security/2023/12/25/1)	http://www.openwall.com/lists/oss-security/2023/12/25/1
16	www.openwall.com (oss-security/2023/12/29/2)	http://www.openwall.com/lists/oss-security/2023/12/29/2
17	www.openwall.com (oss-security/2024/01/01/1)	http://www.openwall.com/lists/oss-security/2024/01/01/1
18	www.openwall.com (oss-security/2024/01/01/2)	http://www.openwall.com/lists/oss-security/2024/01/01/2
19	www.openwall.com (oss-security/2024/01/01/3)	http://www.openwall.com/lists/oss-security/2024/01/01/3
20	www.youtube.com (watch?v=V8KPV96g1To)	https://www.youtube.com/watch?v=V8KPV96g1To

変更履歴

No	変更内容	変更日
1	[2024年01月29日] 掲載	2024年1月29日15:27