cloud-init: insecure transmission of EC2 instance data can lead to root privilege escalation
Published Nov 25, 2019
8.8
HIGHCVSS 3.1
EPSS 2.05%
Description
An privilege elevation vulnerability exists in Cloud-init before 0.7.0 when requests to an untrusted system are submitted for EC2 instance data.
Affected products
-
- Version before 0.7.0StatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Cloud-Init | Cloud-Init | n/a |
|
Configuration 1
- < 0.7.0
Configuration 2
- 8.0
- 9.0
- 10.0
Configuration 3
- 11
- 11
No data.
Red Hat OpenStack Platform 3
cloud-init
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat OpenStack Platform 3 | cloud-init | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of cloud-init as shipped with Red Hat Enterprise Linux OpenStack Platform 3.0.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:C/I:C/A:C
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.05% (0.02049) | 80.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.05% (0.02049) | 78.65th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.00% (0.01998) | 82.03th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.31% (0.06309) | 84.49th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.96% (0.01961) | 82.30th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.60% (0.00598) | 79.14th | v3 (v2023.03.01) |
| Apr 22, 2024 | 0.86% (0.00863) | 82.11th | v3 (v2023.03.01) |
| Mar 5, 2024 | 0.91% (0.00907) | 82.32th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.91% (0.00907) | 80.32th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
References (10)
- http://www.openwall.com/lists/oss-security/2014/03/06/7 x_refsource_MISCMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2012-6639 Vendor Advisory
- https://access.redhat.com/security/cve/cve-2012-6639 x_refsource_MISCPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1073591 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-6639 x_refsource_MISCIssue TrackingThird Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2012-6639 x_refsource_MISCIssue TrackingThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2012-6639
- https://security-tracker.debian.org/tracker/CVE-2012-6639 x_refsource_MISCThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2012-6639
- https://www.securityfocus.com/bid/66019/references x_refsource_MISCThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2014/03/06/7 | x_refsource_MISCMailing ListThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2012-6639 | Vendor Advisory | |
| https://access.redhat.com/security/cve/cve-2012-6639 | x_refsource_MISCPatchThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1073591 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-6639 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://bugzilla.suse.com/show_bug.cgi?id=CVE-2012-6639 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-6639 | ||
| https://security-tracker.debian.org/tracker/CVE-2012-6639 | x_refsource_MISCThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2012-6639 | ||
| https://www.securityfocus.com/bid/66019/references | x_refsource_MISCThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.