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nodejs: fs.fchown/fchmod bypasses permission model

🗓️ 26 Aug 2024 08:12:15Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 7 Views

Node.js permission flaw lets fchown and fchmod modify ownership and permissions via a read-only descriptor with allow-fs-write.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.4aarch64nodejs1:20.16.0-1.module+el9.4.0+22197+9e60f127nodejs-1:20.16.0-1.module+el9.4.0+22197+9e60f127.aarch64.rpm
Red Hat Enterprise Linux9.4ppc64lenodejs1:20.16.0-1.module+el9.4.0+22197+9e60f127nodejs-1:20.16.0-1.module+el9.4.0+22197+9e60f127.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xnodejs1:20.16.0-1.module+el9.4.0+22197+9e60f127nodejs-1:20.16.0-1.module+el9.4.0+22197+9e60f127.s390x.rpm
Red Hat Enterprise Linux9.4x86_64nodejs1:20.16.0-1.module+el9.4.0+22197+9e60f127nodejs-1:20.16.0-1.module+el9.4.0+22197+9e60f127.x86_64.rpm
Red Hat Enterprise Linux9.4aarch64nodejs-debuginfo1:20.16.0-1.module+el9.4.0+22197+9e60f127nodejs-debuginfo-1:20.16.0-1.module+el9.4.0+22197+9e60f127.aarch64.rpm
Red Hat Enterprise Linux9.4ppc64lenodejs-debuginfo1:20.16.0-1.module+el9.4.0+22197+9e60f127nodejs-debuginfo-1:20.16.0-1.module+el9.4.0+22197+9e60f127.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xnodejs-debuginfo1:20.16.0-1.module+el9.4.0+22197+9e60f127nodejs-debuginfo-1:20.16.0-1.module+el9.4.0+22197+9e60f127.s390x.rpm
Red Hat Enterprise Linux9.4x86_64nodejs-debuginfo1:20.16.0-1.module+el9.4.0+22197+9e60f127nodejs-debuginfo-1:20.16.0-1.module+el9.4.0+22197+9e60f127.x86_64.rpm
Red Hat Enterprise Linux9.4aarch64nodejs-debugsource1:20.16.0-1.module+el9.4.0+22197+9e60f127nodejs-debugsource-1:20.16.0-1.module+el9.4.0+22197+9e60f127.aarch64.rpm
Red Hat Enterprise Linux9.4ppc64lenodejs-debugsource1:20.16.0-1.module+el9.4.0+22197+9e60f127nodejs-debugsource-1:20.16.0-1.module+el9.4.0+22197+9e60f127.ppc64le.rpm
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18 Mar 2026 02:44Current
7.3High risk
Vulners AI Score7.3
CVSS 33.3
EPSS0.00395
SSVC
CWE-732
permission modelread only descriptorchange ownershipchange permissionsallow file write
7