<?xml version="1.0" encoding="UTF-8"?>
<cvrfdoc xmlns="http://www.icasi.org/CVRF/schema/cvrf/1.1" xmlns:cvrf="http://www.icasi.org/CVRF/schema/cvrf/1.1">
	<DocumentTitle xml:lang="en">An update for libssh is now available for 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-2024-1040</ID>
		</Identification>
		<Status>Final</Status>
		<Version>1.0</Version>
		<RevisionHistory>
			<Revision>
				<Number>1.0</Number>
				<Date>2024-01-12</Date>
				<Description>Initial</Description>
			</Revision>
		</RevisionHistory>
		<InitialReleaseDate>2024-01-12</InitialReleaseDate>
		<CurrentReleaseDate>2024-01-12</CurrentReleaseDate>
		<Generator>
			<Engine>openEuler SA Tool V1.0</Engine>
			<Date>2024-01-12</Date>
		</Generator>
	</DocumentTracking>
	<DocumentNotes>
		<Note Title="Synopsis" Type="General" Ordinal="1" xml:lang="en">libssh security update</Note>
		<Note Title="Summary" Type="General" Ordinal="2" xml:lang="en">An update for libssh is now available for openEuler-22.03-LTS.</Note>
		<Note Title="Description" Type="General" Ordinal="3" xml:lang="en">The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote programs. With its Secure FTP implementation, you can play with remote files easily, without third-party programs others than libcrypto (from openssl).

Security Fix(es):

A flaw was found in libssh. By utilizing the ProxyCommand or ProxyJump feature, users can exploit unchecked hostname syntax on the client. This issue may allow an attacker to inject malicious code into the command of the features mentioned through the hostname parameter.(CVE-2023-6004)

A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection.(CVE-2023-6918)</Note>
		<Note Title="Topic" Type="General" Ordinal="4" xml:lang="en">An update for libssh is now available for openEuler-22.03-LTS.

openEuler Security has rated this update as having a security impact of medium. 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">Medium</Note>
		<Note Title="Affected Component" Type="General" Ordinal="6" xml:lang="en">libssh</Note>
	</DocumentNotes>
	<DocumentReferences>
		<Reference Type="Self">
			<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2024-1040</URL>
		</Reference>
		<Reference Type="openEuler CVE">
			<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-6004</URL>
			<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-6918</URL>
		</Reference>
		<Reference Type="Other">
			<URL>https://nvd.nist.gov/vuln/detail/CVE-2023-6004</URL>
			<URL>https://nvd.nist.gov/vuln/detail/CVE-2023-6918</URL>
		</Reference>
	</DocumentReferences>
	<ProductTree xmlns="http://www.icasi.org/CVRF/schema/prod/1.1">
		<Branch Type="Product Name" Name="openEuler">
			<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="libssh-debugsource-0.9.6-8" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">libssh-debugsource-0.9.6-8.oe2203.aarch64.rpm</FullProductName>
			<FullProductName ProductID="libssh-debuginfo-0.9.6-8" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">libssh-debuginfo-0.9.6-8.oe2203.aarch64.rpm</FullProductName>
			<FullProductName ProductID="libssh-0.9.6-8" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">libssh-0.9.6-8.oe2203.aarch64.rpm</FullProductName>
			<FullProductName ProductID="libssh-devel-0.9.6-8" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">libssh-devel-0.9.6-8.oe2203.aarch64.rpm</FullProductName>
		</Branch>
		<Branch Type="Package Arch" Name="noarch">
			<FullProductName ProductID="libssh-help-0.9.6-8" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">libssh-help-0.9.6-8.oe2203.noarch.rpm</FullProductName>
		</Branch>
		<Branch Type="Package Arch" Name="src">
			<FullProductName ProductID="libssh-0.9.6-8" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">libssh-0.9.6-8.oe2203.src.rpm</FullProductName>
		</Branch>
		<Branch Type="Package Arch" Name="x86_64">
			<FullProductName ProductID="libssh-debuginfo-0.9.6-8" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">libssh-debuginfo-0.9.6-8.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="libssh-0.9.6-8" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">libssh-0.9.6-8.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="libssh-debugsource-0.9.6-8" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">libssh-debugsource-0.9.6-8.oe2203.x86_64.rpm</FullProductName>
			<FullProductName ProductID="libssh-devel-0.9.6-8" CPE="cpe:/a:openEuler:openEuler:22.03-LTS">libssh-devel-0.9.6-8.oe2203.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">A flaw was found in libssh. By utilizing the ProxyCommand or ProxyJump feature, users can exploit unchecked hostname syntax on the client. This issue may allow an attacker to inject malicious code into the command of the features mentioned through the hostname parameter.</Note>
		</Notes>
		<ReleaseDate>2024-01-12</ReleaseDate>
		<CVE>CVE-2023-6004</CVE>
		<ProductStatuses>
			<Status Type="Fixed">
				<ProductID>openEuler-22.03-LTS</ProductID>
			</Status>
		</ProductStatuses>
		<Threats>
			<Threat Type="Impact">
				<Description>Medium</Description>
			</Threat>
		</Threats>
		<CVSSScoreSets>
			<ScoreSet>
				<BaseScore>4.8</BaseScore>
				<Vector>AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L</Vector>
			</ScoreSet>
		</CVSSScoreSets>
		<Remediations>
			<Remediation Type="Vendor Fix">
				<Description>libssh security update</Description>
				<DATE>2024-01-12</DATE>
				<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2024-1040</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">A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection.</Note>
		</Notes>
		<ReleaseDate>2024-01-12</ReleaseDate>
		<CVE>CVE-2023-6918</CVE>
		<ProductStatuses>
			<Status Type="Fixed">
				<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>libssh security update</Description>
				<DATE>2024-01-12</DATE>
				<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2024-1040</URL>
			</Remediation>
		</Remediations>
	</Vulnerability>
</cvrfdoc>