CVE-2023-51766

一、漏洞信息
漏洞编号：CVE-2023-51766
漏洞归属组件：exim
漏洞归属的版本：4.96
CVSS V3.0分值：
BaseScore：5.3 Medium
Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
漏洞简述：
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 . but some other popular e-mail servers do not.
漏洞公开时间：2023-12-24 14:15:07
漏洞创建时间：2023-12-24 14:39:32
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2023-51766

更多参考(点击展开)

参考来源	参考链接	来源链接
cve.mitre.org	http://www.openwall.com/lists/oss-security/2023/12/24/1
cve.mitre.org	http://www.openwall.com/lists/oss-security/2023/12/25/1
cve.mitre.org	http://www.openwall.com/lists/oss-security/2023/12/29/2
cve.mitre.org	http://www.openwall.com/lists/oss-security/2024/01/01/1
cve.mitre.org	http://www.openwall.com/lists/oss-security/2024/01/01/2
cve.mitre.org	http://www.openwall.com/lists/oss-security/2024/01/01/3
cve.mitre.org	https://bugs.exim.org/show_bug.cgi?id=3063
cve.mitre.org	https://bugzilla.redhat.com/show_bug.cgi?id=2255852
cve.mitre.org	https://exim.org/static/doc/security/CVE-2023-51766.txt
cve.mitre.org	https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html
cve.mitre.org	https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca
cve.mitre.org	https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5
cve.mitre.org	https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766
cve.mitre.org	https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/
cve.mitre.org	https://lwn.net/Articles/956533/
cve.mitre.org	https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/
cve.mitre.org	https://www.openwall.com/lists/oss-security/2023/12/23/2
cve.mitre.org	https://www.youtube.com/watch?v=V8KPV96g1To
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-51766	https://bugzilla.suse.com/show_bug.cgi?id=1218387
redhat_bugzilla	https://bugs.exim.org/show_bug.cgi?id=3063	https://bugzilla.redhat.com/show_bug.cgi?id=2255852
redhat_bugzilla	https://security-tracker.debian.org/tracker/CVE-2023-51766	https://bugzilla.redhat.com/show_bug.cgi?id=2255852
redhat_bugzilla	https://www.cve.org/CVERecord?id=CVE-2023-51766	https://bugzilla.redhat.com/show_bug.cgi?id=2255852
debian		https://security-tracker.debian.org/tracker/CVE-2023-51766
gentoo		https://security.gentoo.org/glsa/202402-18
cve_search		https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/
cve_search		https://exim.org/static/doc/security/CVE-2023-51766.txt
cve_search		https://bugs.exim.org/show_bug.cgi?id=3063
cve_search		https://www.openwall.com/lists/oss-security/2023/12/23/2
cve_search		http://www.openwall.com/lists/oss-security/2023/12/24/1
cve_search		http://www.openwall.com/lists/oss-security/2023/12/25/1
cve_search		https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca
cve_search		https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5
cve_search		https://bugzilla.redhat.com/show_bug.cgi?id=2255852
cve_search		https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html
cve_search		http://www.openwall.com/lists/oss-security/2023/12/29/2
cve_search		https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766
cve_search		http://www.openwall.com/lists/oss-security/2024/01/01/1
cve_search		http://www.openwall.com/lists/oss-security/2024/01/01/2
cve_search		http://www.openwall.com/lists/oss-security/2024/01/01/3
cve_search		https://www.youtube.com/watch?v=V8KPV96g1To
cve_search		https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html
cve_search		https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/
cve_search		https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/
cve_search		https://lwn.net/Articles/956533/
amazon_linux_explore	https://access.redhat.com/security/cve/CVE-2023-51766	https://explore.alas.aws.amazon.com/CVE-2023-51766.html
amazon_linux_explore	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-51766	https://explore.alas.aws.amazon.com/CVE-2023-51766.html
snyk	https://bugs.exim.org/show_bug.cgi?id=3063	https://security.snyk.io/vuln/SNYK-UNMANAGED-EXIMEXIM-6139277
snyk	https://github.com/Exim/exim/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca	https://security.snyk.io/vuln/SNYK-UNMANAGED-EXIMEXIM-6139277
snyk	https://github.com/Exim/exim/commit/cf1376206284f2a4f11e32d931d4aade34c206c5	https://security.snyk.io/vuln/SNYK-UNMANAGED-EXIMEXIM-6139277
snyk	https://www.openwall.com/lists/oss-security/2023/12/23/2	https://security.snyk.io/vuln/SNYK-UNMANAGED-EXIMEXIM-6139277
snyk	https://exim.org/static/doc/security/CVE-2023-51766.txt	https://security.snyk.io/vuln/SNYK-UNMANAGED-EXIMEXIM-6139277
snyk	https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/	https://security.snyk.io/vuln/SNYK-UNMANAGED-EXIMEXIM-6139277
cve.mitre.org	https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/
cve.mitre.org	https://lwn.net/Articles/956533/
cve.mitre.org	https://www.youtube.com/watch?v=V8KPV96g1To
cve.mitre.org	http://www.openwall.com/lists/oss-security/2023/12/24/1
cve.mitre.org	http://www.openwall.com/lists/oss-security/2023/12/25/1
cve.mitre.org	http://www.openwall.com/lists/oss-security/2023/12/29/2
cve.mitre.org	http://www.openwall.com/lists/oss-security/2024/01/01/1
cve.mitre.org	http://www.openwall.com/lists/oss-security/2024/01/01/2
cve.mitre.org	http://www.openwall.com/lists/oss-security/2024/01/01/3
cve.mitre.org	https://bugs.exim.org/show_bug.cgi?id=3063
cve.mitre.org	https://bugzilla.redhat.com/show_bug.cgi?id=2255852
cve.mitre.org	https://exim.org/static/doc/security/CVE-2023-51766.txt
cve.mitre.org	https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html
cve.mitre.org	https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca
cve.mitre.org	https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5
cve.mitre.org	https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766
cve.mitre.org	https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/
cve.mitre.org	https://www.openwall.com/lists/oss-security/2023/12/23/2

漏洞分析指导链接：
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
漏洞数据来源:
openBrain开源漏洞感知系统
漏洞补丁信息：

详情(点击展开)

影响的包	修复版本	修复补丁	问题引入补丁	来源
		https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca		cve.mitre.org
		https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5		cve.mitre.org
		https://github.com/Exim/exim/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca		snyk
		https://github.com/Exim/exim/commit/cf1376206284f2a4f11e32d931d4aade34c206c5		snyk
		http://www.openwall.com/lists/oss-security/2023/12/24/1		nvd
		http://www.openwall.com/lists/oss-security/2023/12/25/1		nvd
		http://www.openwall.com/lists/oss-security/2023/12/29/2		nvd
		http://www.openwall.com/lists/oss-security/2024/01/01/1		nvd
		http://www.openwall.com/lists/oss-security/2024/01/01/2		nvd
		http://www.openwall.com/lists/oss-security/2024/01/01/3		nvd
		https://bugs.exim.org/show_bug.cgi?id=3063		nvd
		https://bugzilla.redhat.com/show_bug.cgi?id=2255852		nvd
		https://exim.org/static/doc/security/CVE-2023-51766.txt		nvd
		https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html		nvd
		https://git.exim.org/exim.git/commit/5bb786d5ad568a88d50d15452aacc8404047e5ca		nvd
		https://git.exim.org/exim.git/commit/cf1376206284f2a4f11e32d931d4aade34c206c5		nvd
		https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766		nvd
		https://lists.debian.org/debian-lts-announce/2024/01/msg00002.html		nvd
		https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORN7OKEQPPBKUHYRQ6LR5PSNBQVDHAWB/		nvd
		https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QPDWHJPABVJCXDSNELSSVTIVAJU2MDUQ/		nvd
		https://lwn.net/Articles/956533/		nvd
		https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/		nvd
		https://www.openwall.com/lists/oss-security/2023/12/23/2		nvd
		https://www.youtube.com/watch?v=V8KPV96g1To		nvd

二、漏洞分析结构反馈
影响性分析说明：
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 . but some other popular e-mail servers do not.
openEuler评分：
5.3
Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
受影响版本排查(受影响/不受影响)：
1.master(4.97.1):受影响
2.openEuler-24.03-LTS(4.97.1):受影响
3.openEuler-24.03-LTS-Next(4.97.1):受影响
4.openEuler-22.03-LTS-SP4(4.96):受影响
5.openEuler-22.03-LTS-SP3(4.96):受影响
6.openEuler-22.03-LTS-SP1:不受影响
7.openEuler-20.03-LTS-SP4:不受影响

修复是否涉及abi变化(是/否)：
1.master(4.97.1):否
2.openEuler-24.03-LTS(4.97.1):否
3.openEuler-24.03-LTS-Next(4.97.1):否
4.openEuler-22.03-LTS-SP4(4.96):否
5.openEuler-22.03-LTS-SP1:否
6.openEuler-22.03-LTS-SP3(4.96):否
7.openEuler-20.03-LTS-SP4:否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-1928

@AlexZ11 ,@small_leek ,@jimmy_hero ,@zhuchunyi 
**issue处理注意事项:** 
**1. 当前issue受影响的分支提交pr时, 须在pr描述中填写当前issue编号进行关联, 否则无法关闭当前issue;**
**2. 模板内容需要填写完整, 无论是受影响或者不受影响都需要填写完整内容,未引入的分支不需要填写, 否则无法关闭当前issue;**
**3. 以下为模板中需要填写完整的内容, 请复制到评论区回复, 注: 内容的标题名称(影响性分析说明, openEuler评分, 受影响版本排查(受影响/不受影响), 修复是否涉及abi变化(是/否))不能省略,省略后cve-manager将无法正常解析填写内容.**
************************************************************************
影响性分析说明:

openEuler评分: (评分和向量)

受影响版本排查(受影响/不受影响): 
1.master(4.96):
2.openEuler-20.03-LTS-SP1:
3.openEuler-20.03-LTS-SP3:
4.openEuler-20.03-LTS-SP4:
5.openEuler-22.03-LTS:
6.openEuler-22.03-LTS-Next(4.96):
7.openEuler-22.03-LTS-SP1:
8.openEuler-22.03-LTS-SP2(4.96):
9.openEuler-22.03-LTS-SP3:

修复是否涉及abi变化(是/否)：
1.master(4.96):
2.openEuler-20.03-LTS-SP1:
3.openEuler-20.03-LTS-SP3:
4.openEuler-20.03-LTS-SP4:
5.openEuler-22.03-LTS:
6.openEuler-22.03-LTS-Next(4.96):
7.openEuler-22.03-LTS-SP1:
8.openEuler-22.03-LTS-SP2(4.96):
9.openEuler-22.03-LTS-SP3:

-----------------------------------------------------------------------
issue处理具体操作请参考: 
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
pr关联issue具体操作请参考:
https://gitee.com/help/articles/4142

参考网址	关联pr	状态	补丁链接
https://nvd.nist.gov/vuln/detail/CVE-2023-51766
https://ubuntu.com/security/CVE-2023-51766	None	None	https://discourse.ubuntu.com/c/ubuntu-pro
https://www.opencve.io/cve/CVE-2023-51766
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2023-51766

说明：补丁链接仅供初步排查参考，实际可用性请人工再次确认，补丁下载验证可使用CVE补丁工具。
若补丁不准确，烦请在此issue下评论 '/report-patch 参考网址补丁链接1,补丁链接2' 反馈正确信息，便于我们不断优化工具，不胜感激。
如 /report-patch https://security-tracker.debian.org/tracker/CVE-2021-3997 https://github.com/systemd/systemd/commit/5b1cf7a9be37e20133c0208005274ce4a5b5c6a1

影响性分析说明:
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 . but some other popular e-mail servers do not.

openEuler评分: (评分和向量)
5.3
CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

受影响版本排查(受影响/不受影响):
1.master(4.97.1):受影响
2.openEuler-24.03-LTS(4.97.1):受影响
3.openEuler-24.03-LTS-Next(4.97.1):受影响
4.openEuler-22.03-LTS-SP4(4.96):受影响
5.openEuler-22.03-LTS-SP1(4.96):受影响
6.openEuler-22.03-LTS-SP3(4.96):受影响
7.openEuler-20.03-LTS-SP4:不受影响

修复是否涉及abi变化(是/否)：
1.master(4.97.1):否
2.openEuler-24.03-LTS(4.97.1):否
3.openEuler-24.03-LTS-Next(4.97.1):否
4.openEuler-22.03-LTS-SP4(4.96):否
5.openEuler-22.03-LTS-SP1(4.96):否
6.openEuler-22.03-LTS-SP3(4.96):否
7.openEuler-20.03-LTS-SP4:否

影响性分析说明:
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 . but some other popular e-mail servers do not.

openEuler评分: (评分和向量)
5.3
CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

受影响版本排查(受影响/不受影响):
1.master(4.97.1):受影响
2.openEuler-24.03-LTS(4.97.1):受影响
3.openEuler-24.03-LTS-Next(4.97.1):受影响
4.openEuler-22.03-LTS-SP4(4.96):受影响
5.openEuler-22.03-LTS-SP1(4.96):不受影响
6.openEuler-22.03-LTS-SP3(4.96):受影响
7.openEuler-20.03-LTS-SP4:不受影响

修复是否涉及abi变化(是/否)：
1.master(4.97.1):否
2.openEuler-24.03-LTS(4.97.1):否
3.openEuler-24.03-LTS-Next(4.97.1):否
4.openEuler-22.03-LTS-SP4(4.96):否
5.openEuler-22.03-LTS-SP1(4.96):否
6.openEuler-22.03-LTS-SP3(4.96):否
7.openEuler-20.03-LTS-SP4:否

/close

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CVE-2023-51766

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