<?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 python3 is now available for openEuler-20.03-LTS-SP1 and openEuler-20.03-LTS-SP2</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-2021-1401</ID>
		</Identification>
		<Status>Final</Status>
		<Version>1.0</Version>
		<RevisionHistory>
			<Revision>
				<Number>1.0</Number>
				<Date>2021-10-19</Date>
				<Description>Initial</Description>
			</Revision>
		</RevisionHistory>
		<InitialReleaseDate>2021-10-19</InitialReleaseDate>
		<CurrentReleaseDate>2021-10-19</CurrentReleaseDate>
		<Generator>
			<Engine>openEuler SA Tool V1.0</Engine>
			<Date>2021-10-19</Date>
		</Generator>
	</DocumentTracking>
	<DocumentNotes>
		<Note Title="Synopsis" Type="General" Ordinal="1" xml:lang="en">python3 security update</Note>
		<Note Title="Summary" Type="General" Ordinal="2" xml:lang="en">An update for python3 is now available for openEuler-20.03-LTS-SP1 and openEuler-20.03-LTS-SP2.</Note>
		<Note Title="Description" Type="General" Ordinal="3" xml:lang="en">Python combines remarkable power with very clear syntax. It has modules, classes, exceptions, very high level dynamic data types, and dynamic typing. There are interfaces to many system calls and libraries, as well as to various windowing systems. New built-in modules are easily written in C or C++ (or other languages, depending on the chosen implementation). Python is also usable as an extension language for applications written in other languages that need easy-to-use scripting or automation interfaces.

Security Fix(es):

A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.(CVE-2021-3737)

There s a flaw in urllib s AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.(CVE-2021-3733)</Note>
		<Note Title="Topic" Type="General" Ordinal="4" xml:lang="en">An update for python3 is now available for openEuler-20.03-LTS-SP1 and openEuler-20.03-LTS-SP2.

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">python3</Note>
	</DocumentNotes>
	<DocumentReferences>
		<Reference Type="Self">
			<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1401</URL>
		</Reference>
		<Reference Type="openEuler CVE">
			<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-3737</URL>
		</Reference>
		<Reference Type="Other">
			<URL>https://nvd.nist.gov/vuln/detail/CVE-2021-3737</URL>
		</Reference>
	</DocumentReferences>
	<ProductTree xmlns="http://www.icasi.org/CVRF/schema/prod/1.1">
		<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-SP2" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">openEuler-20.03-LTS-SP2</FullProductName>
		</Branch>
		<Branch Type="Package Arch" Name="aarch64">
			<FullProductName ProductID="python3-yarn-security-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-3.7.9-15.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="python3-devel-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-devel-3.7.9-15.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="python3-common-native-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-debug-3.7.9-15.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="python3-debugsource-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-debugsource-3.7.9-15.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="python3-debuginfo-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-debuginfo-3.7.9-15.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="python3-yarn-security-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-3.7.9-16.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="python3-devel-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-devel-3.7.9-16.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="python3-common-native-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-debug-3.7.9-16.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="python3-debugsource-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-debugsource-3.7.9-16.oe1.aarch64.rpm</FullProductName>
			<FullProductName ProductID="python3-debuginfo-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-debuginfo-3.7.9-16.oe1.aarch64.rpm</FullProductName>
		</Branch>
		<Branch Type="Package Arch" Name="noarch">
			<FullProductName ProductID="python3-tests-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-help-3.7.9-15.oe1.noarch.rpm</FullProductName>
			<FullProductName ProductID="python3-tests-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-help-3.7.9-16.oe1.noarch.rpm</FullProductName>
		</Branch>
		<Branch Type="Package Arch" Name="src">
			<FullProductName ProductID="python3-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-3.7.9-15.oe1.src.rpm</FullProductName>
			<FullProductName ProductID="python3-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-3.7.9-16.oe1.src.rpm</FullProductName>
		</Branch>
		<Branch Type="Package Arch" Name="x86_64">
			<FullProductName ProductID="python3-yarn-security-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-3.7.9-15.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="python3-devel-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-devel-3.7.9-15.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="python3-common-native-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-debug-3.7.9-15.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="python3-debugsource-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-debugsource-3.7.9-15.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="python3-debuginfo-3.7.9-15" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP1">python3-debuginfo-3.7.9-15.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="python3-yarn-security-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-3.7.9-16.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="python3-devel-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-devel-3.7.9-16.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="python3-common-native-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-debug-3.7.9-16.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="python3-debugsource-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-debugsource-3.7.9-16.oe1.x86_64.rpm</FullProductName>
			<FullProductName ProductID="python3-debuginfo-3.7.9-16" CPE="cpe:/a:openEuler:openEuler:20.03-LTS-SP2">python3-debuginfo-3.7.9-16.oe1.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 python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.</Note>
		</Notes>
		<ReleaseDate>2021-10-19</ReleaseDate>
		<CVE>CVE-2021-3737</CVE>
		<ProductStatuses>
			<Status Type="Fixed">
				<ProductID>openEuler-20.03-LTS-SP1</ProductID>
				<ProductID>openEuler-20.03-LTS-SP2</ProductID>
			</Status>
		</ProductStatuses>
		<Threats>
			<Threat Type="Impact">
				<Description>Medium</Description>
			</Threat>
		</Threats>
		<CVSSScoreSets>
			<ScoreSet>
				<BaseScore>5.9</BaseScore>
				<Vector>AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N</Vector>
			</ScoreSet>
		</CVSSScoreSets>
		<Remediations>
			<Remediation Type="Vendor Fix">
				<Description>python3 security update</Description>
				<DATE>2021-10-19</DATE>
				<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1401</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">There s a flaw in urllib s AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.</Note>
		</Notes>
		<ReleaseDate>2021-10-19</ReleaseDate>
		<CVE>CVE-2021-3733</CVE>
		<ProductStatuses>
			<Status Type="Fixed">
				<ProductID>openEuler-20.03-LTS-SP1</ProductID>
				<ProductID>openEuler-20.03-LTS-SP2</ProductID>
			</Status>
		</ProductStatuses>
		<Threats>
			<Threat Type="Impact">
				<Description>Medium</Description>
			</Threat>
		</Threats>
		<CVSSScoreSets>
			<ScoreSet>
				<BaseScore>6.5</BaseScore>
				<Vector>AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H</Vector>
			</ScoreSet>
		</CVSSScoreSets>
		<Remediations>
			<Remediation Type="Vendor Fix">
				<Description>python3 security update</Description>
				<DATE>2021-10-19</DATE>
				<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1401</URL>
			</Remediation>
		</Remediations>
	</Vulnerability>
</cvrfdoc>