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	<DocumentTitle xml:lang="en">An update for bind is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3,openEuler-22.03-LTS and openEuler-22.03-LTS-SP1</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-2023-1384</ID>
		</Identification>
		<Status>Final</Status>
		<Version>1.0</Version>
		<RevisionHistory>
			<Revision>
				<Number>1.0</Number>
				<Date>2023-07-01</Date>
				<Description>Initial</Description>
			</Revision>
		</RevisionHistory>
		<InitialReleaseDate>2023-07-01</InitialReleaseDate>
		<CurrentReleaseDate>2023-07-01</CurrentReleaseDate>
		<Generator>
			<Engine>openEuler SA Tool V1.0</Engine>
			<Date>2023-07-01</Date>
		</Generator>
	</DocumentTracking>
	<DocumentNotes>
		<Note Title="Synopsis" Type="General" Ordinal="1" xml:lang="en">bind security update</Note>
		<Note Title="Summary" Type="General" Ordinal="2" xml:lang="en">An update for bind is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3,openEuler-22.03-LTS and openEuler-22.03-LTS-SP1.</Note>
		<Note Title="Description" Type="General" Ordinal="3" xml:lang="en">The Berkeley Internet Name Domain (BIND) DNS (Domain Name System) server

Security Fix(es):

Every `named` instance configured to run as a recursive resolver maintains a cache database holding the responses to the queries it has recently sent to authoritative servers. The size limit for that cache database can be configured using the `max-cache-size` statement in the configuration file; it defaults to 90% of the total amount of memory available on the host. When the size of the cache reaches 7/8 of the configured limit, a cache-cleaning algorithm starts to remove expired and/or least-recently used RRsets from the cache, to keep memory use below the configured limit.

It has been discovered that the effectiveness of the cache-cleaning algorithm used in `named` can be severely diminished by querying the resolver for specific RRsets in a certain order, effectively allowing the configured `max-cache-size` limit to be significantly exceeded.
This issue affects BIND 9 versions 9.11.0 through 9.16.41, 9.18.0 through 9.18.15, 9.19.0 through 9.19.13, 9.11.3-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.(CVE-2023-2828)</Note>
		<Note Title="Topic" Type="General" Ordinal="4" xml:lang="en">An update for bind is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3,openEuler-22.03-LTS and openEuler-22.03-LTS-SP1.

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">bind</Note>
	</DocumentNotes>
	<DocumentReferences>
		<Reference Type="Self">
			<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1384</URL>
		</Reference>
		<Reference Type="openEuler CVE">
			<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-2828</URL>
		</Reference>
		<Reference Type="Other">
			<URL>https://nvd.nist.gov/vuln/detail/CVE-2023-2828</URL>
		</Reference>
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			<FullProductName ProductID="bind-devel-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-devel-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-utils-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-utils-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-pkcs11-libs-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-pkcs11-libs-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-chroot-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-chroot-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-pkcs11-devel-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-pkcs11-devel-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-dnssec-utils-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-dnssec-utils-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-pkcs11-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-pkcs11-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-debuginfo-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-debuginfo-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-libs-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-libs-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-debugsource-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-debugsource-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-pkcs11-utils-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">bind-pkcs11-utils-9.16.23-18.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-pkcs11-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-pkcs11-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-pkcs11-devel-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-pkcs11-devel-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-utils-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-utils-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-debuginfo-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-debuginfo-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-devel-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-devel-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-pkcs11-libs-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-pkcs11-libs-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-dnssec-utils-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-dnssec-utils-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-chroot-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-chroot-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-libs-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-libs-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-pkcs11-utils-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-pkcs11-utils-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="bind-debugsource-9.16.23-18" CPE="cpe:/a:openEuler:openEuler:22.03-LTS-SP1">bind-debugsource-9.16.23-18.oe2203sp1.x86_64.rpm</FullProductName>
		</Branch>
	</ProductTree>
	<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">Every `named` instance configured to run as a recursive resolver maintains a cache database holding the responses to the queries it has recently sent to authoritative servers. The size limit for that cache database can be configured using the `max-cache-size` statement in the configuration file; it defaults to 90% of the total amount of memory available on the host. When the size of the cache reaches 7/8 of the configured limit, a cache-cleaning algorithm starts to remove expired and/or least-recently used RRsets from the cache, to keep memory use below the configured limit.It has been discovered that the effectiveness of the cache-cleaning algorithm used in `named` can be severely diminished by querying the resolver for specific RRsets in a certain order, effectively allowing the configured `max-cache-size` limit to be significantly exceeded.This issue affects BIND 9 versions 9.11.0 through 9.16.41, 9.18.0 through 9.18.15, 9.19.0 through 9.19.13, 9.11.3-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.</Note>
		</Notes>
		<ReleaseDate>2023-07-01</ReleaseDate>
		<CVE>CVE-2023-2828</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>
				<ProductID>openEuler-22.03-LTS-SP1</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>bind security update</Description>
				<DATE>2023-07-01</DATE>
				<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1384</URL>
			</Remediation>
		</Remediations>
	</Vulnerability>
</cvrfdoc>