Policycoreutils: policycoreutils: toctou race condition in fixfiles allows arbitrary selinux label manipulation
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Red Hat | Red Hat Hardened Images | affected |
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| Red Hat | Red Hat Enterprise Linux 10 | affected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 6 | unknown | — | ||||||
| Red Hat | Red Hat Enterprise Linux 7 | affected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 8 | affected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 9 | affected | — | ||||||
| Red Hat | Red Hat OpenShift Container Platform 4 | affected | — | ||||||
| Red Hat | Red Hat OpenShift Container Platform 4 | affected | — | ||||||
| Red Hat | Red Hat OpenShift Container Platform 5 | affected | — |
No data.
No data.
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| Redhat | Enterprise Linux |
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| Redhat | Hardened Images |
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| Redhat | Openshift Container Platform |
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| Redhat | Policycoreutils |
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Vendor Workaround
As a workaround, use 'restorecon -R /' directly instead of 'fixfiles relabel' or 'fixfiles restore' to perform filesystem relabeling. This avoids the vulnerable /tmp-specific find+chcon code path entirely. Note that this skips the /tmp cleanup logic, but on modern systems where /tmp is mounted as tmpfs, this cleanup is unnecessary as tmpfs cannot retain files from a prior boot.
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.106% probability within 30 days)
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| First Time appeared |
Redhat rhel Els
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| CPEs | cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
cpe:/a:redhat:enterprise_linux:10 cpe:/a:redhat:enterprise_linux:8 cpe:/a:redhat:enterprise_linux:9 cpe:/a:redhat:openshift:5 cpe:/o:redhat:rhel_els:6 cpe:/o:redhat:rhel_els:7 |
| Vendors & Products |
Redhat rhel Els
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| First Time appeared |
Redhat hardened Images
Redhat openshift Container Platform Redhat policycoreutils |
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| Vendors & Products |
Redhat hardened Images
Redhat openshift Container Platform Redhat policycoreutils |
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| References |
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| Metrics |
ssvc
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| Description | A TOCTOU (Time-of-Check-Time-of-Use) race condition vulnerability was found in the fixfiles script in policycoreutils. When running fixfiles relabel or fixfiles restore, the script used find and chcon commands to locate and relabel unlabeled files under /tmp and other directories. A local attacker could exploit a race window between the file discovery and the label change operation by swapping directory components with symlinks, causing chcon to follow the symlink and modify SELinux labels on arbitrary system files. This could undermine SELinux mandatory access control protections on critical files such as /etc/shadow. | |
| Title | Policycoreutils: policycoreutils: toctou race condition in fixfiles allows arbitrary selinux label manipulation | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat openshift |
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| Weaknesses | CWE-367 | |
| CPEs | cpe:/a:redhat:hummingbird:1 cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat openshift |
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| References |
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| Metrics |
cvssV3_1
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