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cvrf2cusa/cvrf/2022/cvrf-openEuler-SA-2022-1536.xml
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<?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 util-linux is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP2 and openEuler-20.03-LTS-SP3</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-2022-1536</ID>
</Identification>
<Status>Final</Status>
<Version>1.0</Version>
<RevisionHistory>
<Revision>
<Number>1.0</Number>
<Date>2022-02-26</Date>
<Description>Initial</Description>
</Revision>
</RevisionHistory>
<InitialReleaseDate>2022-02-26</InitialReleaseDate>
<CurrentReleaseDate>2022-02-26</CurrentReleaseDate>
<Generator>
<Engine>openEuler SA Tool V1.0</Engine>
<Date>2022-02-26</Date>
</Generator>
</DocumentTracking>
<DocumentNotes>
<Note Title="Synopsis" Type="General" Ordinal="1" xml:lang="en">util-linux security update</Note>
<Note Title="Summary" Type="General" Ordinal="2" xml:lang="en">An update for util-linux is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP2 and openEuler-20.03-LTS-SP3.</Note>
<Note Title="Description" Type="General" Ordinal="3" xml:lang="en">The util-linux package contains a random collection of files that implements some low-level basic linux utilities.
Security Fix(es):
A logical error was found in util-linux's libmount library in a function that allows unprivileged users to unmount FUSE filesystems. Incorrect uid checking allows unprivileged users to unmount FUSE filesystems with similar uid users, an attacker could exploit this vulnerability to cause a denial of service to applications using the affected filesystem.(CVE-2021-3995)
that allows unprivileged users to unmount FUSE filesystems. Issues related to parsing the /proc/self/mountinfo file allow unprivileged users to unmount other users' filesystems that are themselves world-writable (such as /tmp) or mounted in a world-writable directory. An attacker could exploit this vulnerability to cause a denial of service to applications that use the affected file system.(CVE-2021-3996)</Note>
<Note Title="Topic" Type="General" Ordinal="4" xml:lang="en">An update for util-linux is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP2 and openEuler-20.03-LTS-SP3.
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">util-linux</Note>
</DocumentNotes>
<DocumentReferences>
<Reference Type="Self">
<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1536</URL>
</Reference>
<Reference Type="openEuler CVE">
<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-3995</URL>
<URL>https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-3996</URL>
</Reference>
<Reference Type="Other">
<URL>https://nvd.nist.gov/vuln/detail/CVE-2021-3995</URL>
<URL>https://nvd.nist.gov/vuln/detail/CVE-2021-3996</URL>
</Reference>
</DocumentReferences>
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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">A logical error was found in util-linux's libmount library in a function that allows unprivileged users to unmount FUSE filesystems. Incorrect uid checking allows unprivileged users to unmount FUSE filesystems with similar uid users, an attacker could exploit this vulnerability to cause a denial of service to applications using the affected filesystem.</Note>
</Notes>
<ReleaseDate>2022-02-26</ReleaseDate>
<CVE>CVE-2021-3995</CVE>
<ProductStatuses>
<Status Type="Fixed">
<ProductID>openEuler-20.03-LTS-SP1</ProductID>
<ProductID>openEuler-20.03-LTS-SP2</ProductID>
<ProductID>openEuler-20.03-LTS-SP3</ProductID>
</Status>
</ProductStatuses>
<Threats>
<Threat Type="Impact">
<Description>Medium</Description>
</Threat>
</Threats>
<CVSSScoreSets>
<ScoreSet>
<BaseScore>4.7</BaseScore>
<Vector>AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H</Vector>
</ScoreSet>
</CVSSScoreSets>
<Remediations>
<Remediation Type="Vendor Fix">
<Description>util-linux security update</Description>
<DATE>2022-02-26</DATE>
<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1536</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">that allows unprivileged users to unmount FUSE filesystems. Issues related to parsing the /proc/self/mountinfo file allow unprivileged users to unmount other users' filesystems that are themselves world-writable (such as /tmp) or mounted in a world-writable directory. An attacker could exploit this vulnerability to cause a denial of service to applications that use the affected file system.</Note>
</Notes>
<ReleaseDate>2022-02-26</ReleaseDate>
<CVE>CVE-2021-3996</CVE>
<ProductStatuses>
<Status Type="Fixed">
<ProductID>openEuler-20.03-LTS-SP1</ProductID>
<ProductID>openEuler-20.03-LTS-SP2</ProductID>
<ProductID>openEuler-20.03-LTS-SP3</ProductID>
</Status>
</ProductStatuses>
<Threats>
<Threat Type="Impact">
<Description>Medium</Description>
</Threat>
</Threats>
<CVSSScoreSets>
<ScoreSet>
<BaseScore>5.5</BaseScore>
<Vector>AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H</Vector>
</ScoreSet>
</CVSSScoreSets>
<Remediations>
<Remediation Type="Vendor Fix">
<Description>util-linux security update</Description>
<DATE>2022-02-26</DATE>
<URL>https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1536</URL>
</Remediation>
</Remediations>
</Vulnerability>
</cvrfdoc>
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