fkie_cve-2021-3995
Vulnerability from fkie_nvd
Published
2022-08-23 20:15
Modified
2024-11-21 06:23
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows an unprivileged local attacker to unmount FUSE filesystems that belong to certain other users who have a UID that is a prefix of the UID of the attacker in its string form. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.
References
secalert@redhat.comhttp://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.htmlThird Party Advisory, VDB Entry
secalert@redhat.comhttp://seclists.org/fulldisclosure/2022/Dec/4Mailing List, Third Party Advisory
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2022/11/30/2Mailing List, Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2024631https://access.redhat.com/security/cve/CVE-2021-3995Broken Link, Issue Tracking
secalert@redhat.comhttps://github.com/util-linux/util-linux/commit/57202f5713afa2af20ffbb6ab5331481d0396f8dPatch, Third Party Advisory
secalert@redhat.comhttps://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotesRelease Notes, Vendor Advisory
secalert@redhat.comhttps://security.gentoo.org/glsa/202401-08
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20221209-0002/Third Party Advisory
secalert@redhat.comhttps://www.openwall.com/lists/oss-security/2022/01/24/2Exploit, Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.htmlThird Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2022/Dec/4Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2022/11/30/2Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2024631https://access.redhat.com/security/cve/CVE-2021-3995Broken Link, Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://github.com/util-linux/util-linux/commit/57202f5713afa2af20ffbb6ab5331481d0396f8dPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.37/v2.37.3-ReleaseNotesRelease Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202401-08
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20221209-0002/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2022/01/24/2Exploit, Mailing List, Patch, Third Party Advisory
Impacted products
Vendor Product Version
kernel util-linux *
fedoraproject fedora 35


To clipboard 

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   descriptions: [
      {
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         value: "A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows an unprivileged local attacker to unmount FUSE filesystems that belong to certain other users who have a UID that is a prefix of the UID of the attacker in its string form. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.",
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         lang: "es",
         value: "Se ha encontrado un error lógico en la biblioteca libmount de util-linux en la función que permite a un usuario no privilegiado desmontar un sistema de archivos FUSE. Este fallo permite a un atacante local no privilegiado desmontar sistemas de archivos FUSE que pertenecen a otros usuarios determinados que presentan un UID que es un prefijo del UID del atacante en su forma de cadena. Un atacante puede usar este fallo para causar una denegación de servicio a las aplicaciones que usan los sistemas de archivos afectados.",
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   id: "CVE-2021-3995",
   lastModified: "2024-11-21T06:23:20.203",
   metrics: {
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               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 5.5,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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