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	<DocumentTitle xml:lang="en">An update for dhcp is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3 and openEuler-22.03-LTS</DocumentTitle>
	<DocumentType>Security Advisory</DocumentType>
	<DocumentPublisher Type="Vendor">
		<ContactDetails>openeuler-security@openeuler.org</ContactDetails>
		<IssuingAuthority>openEuler security committee</IssuingAuthority>
	</DocumentPublisher>
	<DocumentTracking>
		<Identification>
			<ID>openEuler-SA-2022-1993</ID>
		</Identification>
		<Status>Final</Status>
		<Version>1.0</Version>
		<RevisionHistory>
			<Revision>
				<Number>1.0</Number>
				<Date>2022-10-14</Date>
				<Description>Initial</Description>
			</Revision>
		</RevisionHistory>
		<InitialReleaseDate>2022-10-14</InitialReleaseDate>
		<CurrentReleaseDate>2022-10-14</CurrentReleaseDate>
		<Generator>
			<Engine>openEuler SA Tool V1.0</Engine>
			<Date>2022-10-14</Date>
		</Generator>
	</DocumentTracking>
	<DocumentNotes>
		<Note Title="Synopsis" Type="General" Ordinal="1" xml:lang="en">dhcp security update</Note>
		<Note Title="Summary" Type="General" Ordinal="2" xml:lang="en">An update for dhcp is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3 and openEuler-22.03-LTS.</Note>
		<Note Title="Description" Type="General" Ordinal="3" xml:lang="en">The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on UDP/IP networks whereby a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks.

Security Fix(es):

In BIND 9.0.0 -&gt; 9.11.29, 9.12.0 -&gt; 9.16.13, and versions BIND 9.9.3-S1 -&gt; 9.11.29-S1 and 9.16.8-S1 -&gt; 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -&gt; 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.(CVE-2021-25215)

In BIND 9.8.5 -&gt; 9.8.8, 9.9.3 -&gt; 9.11.29, 9.12.0 -&gt; 9.16.13, and versions BIND 9.9.3-S1 -&gt; 9.11.29-S1 and 9.16.8-S1 -&gt; 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -&gt; 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.(CVE-2021-25214)

In BIND 9.3.0 -&gt; 9.11.35, 9.12.0 -&gt; 9.16.21, and versions 9.9.3-S1 -&gt; 9.11.35-S1 and 9.16.8-S1 -&gt; 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -&gt; 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.(CVE-2021-25219)

BIND 9.11.0 -&gt; 9.11.36 9.12.0 -&gt; 9.16.26 9.17.0 -&gt; 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -&gt; 9.11.36-S1 9.16.8-S1 -&gt; 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients.(CVE-2021-25220)</Note>
		<Note Title="Topic" Type="General" Ordinal="4" xml:lang="en">An update for dhcp is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3 and openEuler-22.03-LTS.

openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.</Note>
		<Note Title="Severity" Type="General" Ordinal="5" xml:lang="en">High</Note>
		<Note Title="Affected Component" Type="General" Ordinal="6" xml:lang="en">dhcp</Note>
	</DocumentNotes>
	<DocumentReferences>
		<Reference Type="Self">
			<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1993</URL>
		</Reference>
		<Reference Type="openEuler CVE">
			<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-25215</URL>
			<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-25214</URL>
			<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-25219</URL>
			<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-25220</URL>
		</Reference>
		<Reference Type="Other">
			<URL>https://nvd.nist.gov/vuln/detail/CVE-2021-25215</URL>
			<URL>https://nvd.nist.gov/vuln/detail/CVE-2021-25214</URL>
			<URL>https://nvd.nist.gov/vuln/detail/CVE-2021-25219</URL>
			<URL>https://nvd.nist.gov/vuln/detail/CVE-2021-25220</URL>
		</Reference>
	</DocumentReferences>
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		<Branch Type="Product Name" Name="openEuler">
			<FullProductName ProductID="openEuler-20.03-LTS-SP1" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">openEuler-20.03-LTS-SP1</FullProductName>
			<FullProductName ProductID="openEuler-20.03-LTS-SP3" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP3">openEuler-20.03-LTS-SP3</FullProductName>
			<FullProductName ProductID="openEuler-22.03-LTS" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">openEuler-22.03-LTS</FullProductName>
		</Branch>
		<Branch Type="Package Arch" Name="aarch64">
			<FullProductName ProductID="dhcp-devel-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">dhcp-devel-4.4.2-8.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debuginfo-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">dhcp-debuginfo-4.4.2-8.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">dhcp-4.4.2-8.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debugsource-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">dhcp-debugsource-4.4.2-8.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-devel-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP3">dhcp-devel-4.4.2-8.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debugsource-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP3">dhcp-debugsource-4.4.2-8.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debuginfo-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP3">dhcp-debuginfo-4.4.2-8.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP3">dhcp-4.4.2-8.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debuginfo-4.4.2-14" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">dhcp-debuginfo-4.4.2-14.oe2203.aarch64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-devel-4.4.2-14" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">dhcp-devel-4.4.2-14.oe2203.aarch64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-4.4.2-14" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">dhcp-4.4.2-14.oe2203.aarch64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debugsource-4.4.2-14" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">dhcp-debugsource-4.4.2-14.oe2203.aarch64.rpm</FullProductName>
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		<Branch Type="Package Arch" Name="noarch">
			<FullProductName ProductID="dhcp-help-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">dhcp-help-4.4.2-8.oe1.noarch.rpm</FullProductName>
			<FullProductName ProductID="dhcp-help-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP3">dhcp-help-4.4.2-8.oe1.noarch.rpm</FullProductName>
			<FullProductName ProductID="dhcp-help-4.4.2-14" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">dhcp-help-4.4.2-14.oe2203.noarch.rpm</FullProductName>
		</Branch>
		<Branch Type="Package Arch" Name="src">
			<FullProductName ProductID="dhcp-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">dhcp-4.4.2-8.oe1.src.rpm</FullProductName>
			<FullProductName ProductID="dhcp-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP3">dhcp-4.4.2-8.oe1.src.rpm</FullProductName>
			<FullProductName ProductID="dhcp-4.4.2-14" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">dhcp-4.4.2-14.oe2203.src.rpm</FullProductName>
		</Branch>
		<Branch Type="Package Arch" Name="x86_64">
			<FullProductName ProductID="dhcp-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">dhcp-4.4.2-8.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debugsource-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">dhcp-debugsource-4.4.2-8.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debuginfo-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">dhcp-debuginfo-4.4.2-8.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-devel-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">dhcp-devel-4.4.2-8.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-devel-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP3">dhcp-devel-4.4.2-8.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debugsource-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP3">dhcp-debugsource-4.4.2-8.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debuginfo-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP3">dhcp-debuginfo-4.4.2-8.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-4.4.2-8" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP3">dhcp-4.4.2-8.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debugsource-4.4.2-14" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">dhcp-debugsource-4.4.2-14.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-4.4.2-14" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">dhcp-4.4.2-14.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-devel-4.4.2-14" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">dhcp-devel-4.4.2-14.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="dhcp-debuginfo-4.4.2-14" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">dhcp-debuginfo-4.4.2-14.oe2203.x86_64.rpm</FullProductName>
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	<Vulnerability Ordinal="1" xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1">
		<Notes>
			<Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">In BIND 9.0.0 -&gt; 9.11.29, 9.12.0 -&gt; 9.16.13, and versions BIND 9.9.3-S1 -&gt; 9.11.29-S1 and 9.16.8-S1 -&gt; 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -&gt; 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.</Note>
		</Notes>
		<ReleaseDate>2022-10-14</ReleaseDate>
		<CVE>CVE-2021-25215</CVE>
		<ProductStatuses>
			<Status Type="Fixed">
				<ProductID>openEuler-20.03-LTS-SP1</ProductID>
				<ProductID>openEuler-20.03-LTS-SP3</ProductID>
				<ProductID>openEuler-22.03-LTS</ProductID>
			</Status>
		</ProductStatuses>
		<Threats>
			<Threat Type="Impact">
				<Description>High</Description>
			</Threat>
		</Threats>
		<CVSSScoreSets>
			<ScoreSet>
				<BaseScore>7.5</BaseScore>
				<Vector>AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H</Vector>
			</ScoreSet>
		</CVSSScoreSets>
		<Remediations>
			<Remediation Type="Vendor Fix">
				<Description>dhcp security update</Description>
				<DATE>2022-10-14</DATE>
				<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1993</URL>
			</Remediation>
		</Remediations>
	</Vulnerability>
	<Vulnerability Ordinal="2" xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1">
		<Notes>
			<Note Title="Vulnerability Description" Type="General" Ordinal="2" xml:lang="en">In BIND 9.8.5 -&gt; 9.8.8, 9.9.3 -&gt; 9.11.29, 9.12.0 -&gt; 9.16.13, and versions BIND 9.9.3-S1 -&gt; 9.11.29-S1 and 9.16.8-S1 -&gt; 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -&gt; 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.</Note>
		</Notes>
		<ReleaseDate>2022-10-14</ReleaseDate>
		<CVE>CVE-2021-25214</CVE>
		<ProductStatuses>
			<Status Type="Fixed">
				<ProductID>openEuler-20.03-LTS-SP1</ProductID>
				<ProductID>openEuler-20.03-LTS-SP3</ProductID>
				<ProductID>openEuler-22.03-LTS</ProductID>
			</Status>
		</ProductStatuses>
		<Threats>
			<Threat Type="Impact">
				<Description>Medium</Description>
			</Threat>
		</Threats>
		<CVSSScoreSets>
			<ScoreSet>
				<BaseScore>6.5</BaseScore>
				<Vector>AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H</Vector>
			</ScoreSet>
		</CVSSScoreSets>
		<Remediations>
			<Remediation Type="Vendor Fix">
				<Description>dhcp security update</Description>
				<DATE>2022-10-14</DATE>
				<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1993</URL>
			</Remediation>
		</Remediations>
	</Vulnerability>
	<Vulnerability Ordinal="3" xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1">
		<Notes>
			<Note Title="Vulnerability Description" Type="General" Ordinal="3" xml:lang="en">In BIND 9.3.0 -&gt; 9.11.35, 9.12.0 -&gt; 9.16.21, and versions 9.9.3-S1 -&gt; 9.11.35-S1 and 9.16.8-S1 -&gt; 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -&gt; 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.</Note>
		</Notes>
		<ReleaseDate>2022-10-14</ReleaseDate>
		<CVE>CVE-2021-25219</CVE>
		<ProductStatuses>
			<Status Type="Fixed">
				<ProductID>openEuler-20.03-LTS-SP1</ProductID>
				<ProductID>openEuler-20.03-LTS-SP3</ProductID>
				<ProductID>openEuler-22.03-LTS</ProductID>
			</Status>
		</ProductStatuses>
		<Threats>
			<Threat Type="Impact">
				<Description>Medium</Description>
			</Threat>
		</Threats>
		<CVSSScoreSets>
			<ScoreSet>
				<BaseScore>5.3</BaseScore>
				<Vector>AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L</Vector>
			</ScoreSet>
		</CVSSScoreSets>
		<Remediations>
			<Remediation Type="Vendor Fix">
				<Description>dhcp security update</Description>
				<DATE>2022-10-14</DATE>
				<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1993</URL>
			</Remediation>
		</Remediations>
	</Vulnerability>
	<Vulnerability Ordinal="4" xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1">
		<Notes>
			<Note Title="Vulnerability Description" Type="General" Ordinal="4" xml:lang="en">BIND 9.11.0 -&gt; 9.11.36 9.12.0 -&gt; 9.16.26 9.17.0 -&gt; 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -&gt; 9.11.36-S1 9.16.8-S1 -&gt; 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients.</Note>
		</Notes>
		<ReleaseDate>2022-10-14</ReleaseDate>
		<CVE>CVE-2021-25220</CVE>
		<ProductStatuses>
			<Status Type="Fixed">
				<ProductID>openEuler-20.03-LTS-SP1</ProductID>
				<ProductID>openEuler-20.03-LTS-SP3</ProductID>
				<ProductID>openEuler-22.03-LTS</ProductID>
			</Status>
		</ProductStatuses>
		<Threats>
			<Threat Type="Impact">
				<Description>Medium</Description>
			</Threat>
		</Threats>
		<CVSSScoreSets>
			<ScoreSet>
				<BaseScore>6.8</BaseScore>
				<Vector>AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N</Vector>
			</ScoreSet>
		</CVSSScoreSets>
		<Remediations>
			<Remediation Type="Vendor Fix">
				<Description>dhcp security update</Description>
				<DATE>2022-10-14</DATE>
				<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1993</URL>
			</Remediation>
		</Remediations>
	</Vulnerability>
</cvrfdoc>