CVE-2023-50387

一、漏洞信息
漏洞编号：CVE-2023-50387
漏洞归属组件：bind
漏洞归属的版本：9.11.21,9.11.4,9.16.23,9.16.37,9.18.21
CVSS V3.0分值：
BaseScore：7.5 High
Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
漏洞简述：
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the KeyTrap issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.
漏洞公开时间：2024-02-15 00:15:45
漏洞创建时间：2024-02-14 00:27:31
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2023-50387

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/2024/02/16/2
cve.mitre.org	http://www.openwall.com/lists/oss-security/2024/02/16/3
cve.mitre.org	https://access.redhat.com/security/cve/CVE-2023-50387
cve.mitre.org	https://bugzilla.suse.com/show_bug.cgi?id=1219823
cve.mitre.org	https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html
cve.mitre.org	https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1
cve.mitre.org	https://kb.isc.org/docs/cve-2023-50387
cve.mitre.org	https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html
cve.mitre.org	https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/
cve.mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
cve.mitre.org	https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html
cve.mitre.org	https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387
cve.mitre.org	https://news.ycombinator.com/item?id=39367411
cve.mitre.org	https://news.ycombinator.com/item?id=39372384
cve.mitre.org	https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/
cve.mitre.org	https://security.netapp.com/advisory/ntap-20240307-0007/
cve.mitre.org	https://www.athene-center.de/aktuelles/key-trap
cve.mitre.org	https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf
cve.mitre.org	https://www.isc.org/blogs/2024-bind-security-release/
cve.mitre.org	https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/
cve.mitre.org	https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/
redhat_bugzilla	https://fosstodon.org/@tychotithonus@infosec.exchange/111924626751024210	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://github.com/NLnetLabs/unbound/releases/tag/release-1.19.1	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://kb.isc.org/docs/cve-2023-50387	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://www.athene-center.de/en/news/press/key-trap	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://www.knot-resolver.cz/2024-02-13-knot-resolver-5.7.1.html	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://labs.ripe.net/author/haya-shulman/keytrap-algorithmic-complexity-attacks-exploit-fundamental-design-flaw-in-dnssec/	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://lists.dns-oarc.net/pipermail/dns-operations/2024-February/022436.html	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://www.isc.org/blogs/2024-bind-security-release/	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:0965	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:0977	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:0981	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:0982	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1334	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1335	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1522	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1543	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1544	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1545	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1647	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1648	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1781	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1782	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1789	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1801	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1800	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1804	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:1803	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:2551	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:2587	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:2696	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:2720	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:2721	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:2821	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:2890	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:3271	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:3741	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:3877	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
redhat_bugzilla	https://access.redhat.com/errata/RHSA-2024:3929	https://bugzilla.redhat.com/show_bug.cgi?id=2263914
ubuntu	https://kb.isc.org/docs/cve-2023-50387	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://www.knot-resolver.cz/2024-02-13-knot-resolver-5.7.1.html	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://blog.powerdns.com/2024/02/13/powerdns-recursor-4-8-6-4-9-3-5-0-2-released	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://nlnetlabs.nl/downloads/unbound/CVE-2023-50387_CVE-2023-50868.txt	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://ubuntu.com/security/notices/USN-6633-1	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://ubuntu.com/security/notices/USN-6642-1	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://ubuntu.com/security/notices/USN-6657-1	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://ubuntu.com/security/notices/USN-6665-1	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://ubuntu.com/security/notices/USN-6723-1	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://www.cve.org/CVERecord?id=CVE-2023-50387	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://ubuntu.com/security/notices/USN-6657-2	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://nvd.nist.gov/vuln/detail/CVE-2023-50387	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://launchpad.net/bugs/cve/CVE-2023-50387	https://ubuntu.com/security/CVE-2023-50387
ubuntu	https://security-tracker.debian.org/tracker/CVE-2023-50387	https://ubuntu.com/security/CVE-2023-50387
debian		https://security-tracker.debian.org/tracker/CVE-2023-50387
bind		https://kb.isc.org/v1/docs/cve-2023-50387
anolis		https://anas.openanolis.cn/cves/detail/CVE-2023-50387
cve_search		https://www.athene-center.de/aktuelles/key-trap
cve_search		https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/
cve_search		https://kb.isc.org/docs/cve-2023-50387
cve_search		https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html
cve_search		https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/
cve_search		https://news.ycombinator.com/item?id=39367411
cve_search		https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/
cve_search		https://www.isc.org/blogs/2024-bind-security-release/
cve_search		https://news.ycombinator.com/item?id=39372384
cve_search		https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1
cve_search		https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html
cve_search		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387

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	修复补丁	来源
	https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=3ae7f1ab0d847b17fdc95fd0e5b3120f66dc3af9	snyk
	http://www.openwall.com/lists/oss-security/2024/02/16/2	nvd
	http://www.openwall.com/lists/oss-security/2024/02/16/3	nvd
	https://access.redhat.com/security/cve/CVE-2023-50387	nvd
	https://bugzilla.suse.com/show_bug.cgi?id=1219823	nvd
	https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html	nvd
	https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1	nvd
	https://kb.isc.org/docs/cve-2023-50387	nvd
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/	nvd
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/	nvd
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/	nvd
	https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html	nvd
	https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387	nvd
	https://news.ycombinator.com/item?id=39367411	nvd
	https://news.ycombinator.com/item?id=39372384	nvd
	https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/	nvd
	https://www.athene-center.de/aktuelles/key-trap	nvd
	https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf	nvd
	https://www.isc.org/blogs/2024-bind-security-release/	nvd
	https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/	nvd
	https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/	nvd
bind9	https://gitlab.isc.org/isc-projects/bind9/-/commit/c12608ca934c0433d280e65fe6c631013e200cfe	ubuntu
bind9	https://gitlab.isc.org/isc-projects/bind9/-/commit/751b7cc4750ede6d8c5232751d60aad8ad84aa67	ubuntu
bind9	https://gitlab.isc.org/isc-projects/bind9/-/commit/6a65a425283d70da86bf732449acd6d7c8dec718	ubuntu
bind9	https://gitlab.isc.org/isc-projects/bind9/-/commit/3d206e918b3efbc20074629ad9d99095fbd2e5fd	ubuntu
bind9	https://gitlab.isc.org/isc-projects/bind9/-/commit/a520fbc0470a0d6b72db6aa0b8deda8798551614	ubuntu
	https://github.com/PowerDNS/pdns/pull/13781	debian
	https://github.com/NLnetLabs/unbound/commit/882903f2fa800c4cb6f5e225b728e2887bb7b9ae	debian
	https://www.nlnetlabs.nl/downloads/unbound/patch_CVE-2023-50387_CVE-2023-50868.diff	unbound

二、漏洞分析结构反馈
影响性分析说明：
DNS协议的某些DNSSEC方面（在RFC 4033、4034、4035、6840和相关RFC中）允许远程攻击者通过一个或多个DNSSEC响应引起拒绝服务（CPU消耗），也称为KeyTrap问题。其中一个问题是，当存在许多DNSKEY和RRSIG记录的区域时，协议规范暗示算法必须评估所有DNSKEY和RRSIG记录的组合。
openEuler评分：
7.5
Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
受影响版本排查(受影响/不受影响)：
1.master(9.18.21):受影响
2.openEuler-20.03-LTS-SP4(9.11.21):受影响
3.openEuler-22.03-LTS-SP1(9.16.23):受影响
4.openEuler-22.03-LTS-SP3(9.16.23):受影响
5.openEuler-22.03-LTS-SP4(9.16.23):受影响
6.openEuler-24.03-LTS(9.18.21):受影响
7.openEuler-24.03-LTS-Next(9.18.21):受影响

修复是否涉及abi变化(是/否)：
1.master(9.18.21):否
2.openEuler-20.03-LTS-SP4(9.11.21):否
3.openEuler-22.03-LTS-SP1(9.16.23):否
4.openEuler-22.03-LTS-SP3(9.16.23):否
5.openEuler-22.03-LTS-SP4(9.16.23):否
6.openEuler-24.03-LTS(9.18.21):否
7.openEuler-24.03-LTS-Next(9.18.21):否

@seuzw ,@MrRlu ,@kircher ,@gebidelidaye ,@zengwefeng ,@robertxw ,@sunsuwan 
**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(9.16.37):
2.openEuler-20.03-LTS-SP1(9.11.21):
3.openEuler-20.03-LTS-SP4(9.11.21):
4.openEuler-22.03-LTS(9.16.23):
5.openEuler-22.03-LTS-Next(9.16.23):
6.openEuler-22.03-LTS-SP1(9.16.23):
7.openEuler-22.03-LTS-SP2(9.16.23):
8.openEuler-22.03-LTS-SP3(9.16.23):

修复是否涉及abi变化(是/否)：
1.master(9.16.37):
2.openEuler-20.03-LTS-SP1(9.11.21):
3.openEuler-20.03-LTS-SP4(9.11.21):
4.openEuler-22.03-LTS(9.16.23):
5.openEuler-22.03-LTS-Next(9.16.23):
6.openEuler-22.03-LTS-SP1(9.16.23):
7.openEuler-22.03-LTS-SP2(9.16.23):
8.openEuler-22.03-LTS-SP3(9.16.23):

-----------------------------------------------------------------------
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-2023-50387
https://ubuntu.com/security/CVE-2023-50387	None	None	https://discourse.ubuntu.com/c/ubuntu-pro
https://www.opencve.io/cve/CVE-2023-50387
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2023-50387
https://security-tracker.debian.org/tracker/CVE-2023-50387

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：
DNS协议的某些DNSSEC方面（在RFC 4033、4034、4035、6840和相关RFC中）允许远程攻击者通过一个或多个DNSSEC响应引起拒绝服务（CPU消耗），也称为KeyTrap问题。其中一个问题是，当存在许多DNSKEY和RRSIG记录的区域时，协议规范暗示算法必须评估所有DNSKEY和RRSIG记录的组合。
openEuler评分：
CVSS V2.0分值：
BaseScore：0.0 Low
Vector：CVSS：2.0/
受影响版本排查(受影响/不受影响)：
1.master(9.16.37):受影响
2.openEuler-20.03-LTS-SP1(9.11.21):受影响
3.openEuler-20.03-LTS-SP4(9.11.21):受影响
4.openEuler-22.03-LTS(9.16.23):受影响
5.openEuler-22.03-LTS-Next(9.16.23):受影响
6.openEuler-22.03-LTS-SP1(9.16.23):受影响
7.openEuler-22.03-LTS-SP2(9.16.23):受影响
8.openEuler-22.03-LTS-SP3(9.16.23):受影响

修复是否涉及abi变化(是/否)：
1.master(9.16.37):否
2.openEuler-20.03-LTS-SP1(9.11.21):否
3.openEuler-20.03-LTS-SP4(9.11.21):否
4.openEuler-22.03-LTS(9.16.23):否
5.openEuler-22.03-LTS-Next(9.16.23):否
6.openEuler-22.03-LTS-SP1(9.16.23):否
7.openEuler-22.03-LTS-SP2(9.16.23):否
8.openEuler-22.03-LTS-SP3(9.16.23):否

因bind版本升级与cve修复存在冲突，待版本升级完成后修复

影响性分析说明：
DNS协议的某些DNSSEC方面（在RFC 4033、4034、4035、6840和相关RFC中）允许远程攻击者通过一个或多个DNSSEC响应引起拒绝服务（CPU消耗），也称为KeyTrap问题。其中一个问题是，当存在许多DNSKEY和RRSIG记录的区域时，协议规范暗示算法必须评估所有DNSKEY和RRSIG记录的组合。
openEuler评分：
7.5
Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
受影响版本排查(受影响/不受影响)：
1.master(9.18.21):受影响
2.openEuler-20.03-LTS-SP1(9.11.21):受影响
3.openEuler-20.03-LTS-SP4(9.11.21):受影响
4.openEuler-22.03-LTS(9.16.23):受影响
5.openEuler-22.03-LTS-Next(9.16.23):受影响
6.openEuler-22.03-LTS-SP1(9.16.23):受影响
7.openEuler-22.03-LTS-SP2(9.16.23):受影响
8.openEuler-22.03-LTS-SP3(9.16.23):受影响
9.openEuler-24.03-LTS(9.18.21):受影响

修复是否涉及abi变化(是/否)：
1.master(9.18.21):否
2.openEuler-20.03-LTS-SP1(9.11.21):否
3.openEuler-20.03-LTS-SP4(9.11.21):否
4.openEuler-22.03-LTS(9.16.23):否
5.openEuler-22.03-LTS-Next(9.16.23):否
6.openEuler-22.03-LTS-SP1(9.16.23):否
7.openEuler-22.03-LTS-SP2(9.16.23):否
8.openEuler-22.03-LTS-SP3(9.16.23):否
9.openEuler-24.03-LTS(9.18.21):否

由于20.03-LTS分支以及其他sp分支的版本较低，适配较大，暂不修复，issue挂起；

/reason 由于20.03-LTS分支以及其他sp分支的版本较低，适配较大，暂不修复，issue挂起；

issue状态	操作者	原因
已挂起	robertxw	由于20.03-LTS分支以及其他sp分支的版本较低，适配较大，暂不修复，issue挂起；

影响性分析说明：
DNS协议的某些DNSSEC方面（在RFC 4033、4034、4035、6840和相关RFC中）允许远程攻击者通过一个或多个DNSSEC响应引起拒绝服务（CPU消耗），也称为KeyTrap问题。其中一个问题是，当存在许多DNSKEY和RRSIG记录的区域时，协议规范暗示算法必须评估所有DNSKEY和RRSIG记录的组合。
openEuler评分：
7.5
Vector：CVSS：3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
受影响版本排查(受影响/不受影响)：
1.master:受影响
2.openEuler-20.03-LTS-SP4:受影响
3.openEuler-22.03-LTS-SP1:受影响
4.openEuler-22.03-LTS-SP3:受影响
5.openEuler-22.03-LTS-SP4:受影响
6.openEuler-24.03-LTS:受影响
7.openEuler-24.03-LTS-Next:受影响

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

/reason 由于20.03-LTS分支以及其他sp分支的版本较低，适配较大，暂不修复，issue挂起；

issue状态	操作者	原因
已挂起	robertxw	由于20.03-LTS分支以及其他sp分支的版本较低，适配较大，暂不修复，issue挂起；

src-openEuler/bind

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src-openEuler/bind .gitee-modal { width: 500px !important; }

内容风险标识

CVE-2023-50387

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