dracut: Local information disclosure of initramfs when early cpio is used
Published Aug 1, 2018
7.8
HIGHCVSS 3.0
EPSS 0.31%
Description
A local information disclosure issue was found in dracut before 045 when generating initramfs images with world-readable permissions when 'early cpio' is used, such as when including microcode updates. Local attacker can use this to obtain sensitive information from these files, such as encryption keys or credentials.
Affected products
-
- Version 045StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| The Dracut Project | Dracut | n/a |
|
- < 045
No data.
Red Hat Enterprise Linux 6
dracut
Not affected
Red Hat Enterprise Linux 7
dracut
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | dracut | Not affected | n/a |
| Red Hat Enterprise Linux 7 | dracut | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
AV:L/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.31% (0.00309) | 21.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.31% (0.00309) | 22.29th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00064) | 17.22th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
References (8)
- http://seclists.org/oss-sec/2016/q4/352 mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/94128 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2016-8637 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1392056 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8637 x_refsource_CONFIRMExploitIssue TrackingThird Party Advisory
- https://github.com/dracutdevs/dracut/commit/0db98910a11c12a454eac4c8e86dc7a7bbc764a4 x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-8637
- https://www.cve.org/CVERecord?id=CVE-2016-8637
| Link | Providers | Tags |
|---|---|---|
| http://seclists.org/oss-sec/2016/q4/352 | mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/94128 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2016-8637 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1392056 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8637 | x_refsource_CONFIRMExploitIssue TrackingThird Party Advisory | |
| https://github.com/dracutdevs/dracut/commit/0db98910a11c12a454eac4c8e86dc7a7bbc764a4 | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-8637 | ||
| https://www.cve.org/CVERecord?id=CVE-2016-8637 |
Change history (0)
No recorded changes yet.