CVE-2018-10896
Ubuntu Cloud SSH Host Key Inheritance Vulnerability
Description
The default cloud-init configuration, in cloud-init 0.6.2 and newer, included "ssh_deletekeys: 0", disabling cloud-init's deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks.
INFO
Published Date :
Aug. 1, 2018, 5:29 p.m.
Last Modified :
Feb. 13, 2023, 4:51 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.2
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-10896.
| URL | Resource |
|---|---|
| https://bugs.launchpad.net/cloud-init/+bug/1781094 | Patch Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1574338 | Issue Tracking Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10896 | Issue Tracking Patch Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-10896 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-10896 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 13, 2023
Action Type Old Value New Value Changed Description The default cloud-init configuration included "ssh_deletekeys: 0", disabling cloud-init's deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks. The default cloud-init configuration, in cloud-init 0.6.2 and newer, included "ssh_deletekeys: 0", disabling cloud-init's deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks. Removed Reference https://access.redhat.com/errata/RHSA-2020:3050 [No Types Assigned] Removed Reference https://access.redhat.com/errata/RHSA-2020:3644 [No Types Assigned] Removed Reference https://access.redhat.com/errata/RHSA-2020:3898 [No Types Assigned] Removed Reference https://access.redhat.com/security/cve/CVE-2018-10896 [No Types Assigned] Removed Reference https://bugzilla.redhat.com/show_bug.cgi?id=1598831 [No Types Assigned] Added CWE Red Hat, Inc. CWE-321 -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed Description The default cloud-init configuration, in cloud-init 0.6.2 and newer, included "ssh_deletekeys: 0", disabling cloud-init's deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks. The default cloud-init configuration included "ssh_deletekeys: 0", disabling cloud-init's deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks. Added Reference https://access.redhat.com/security/cve/CVE-2018-10896 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2020:3050 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2020:3898 [No Types Assigned] Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1598831 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2020:3644 [No Types Assigned] Removed CWE Red Hat, Inc. CWE-321 Removed CWE Reason CWE-321 / Assessment performed prior to CVMAP efforts -
Modified Analysis by [email protected]
Oct. 29, 2020
Action Type Old Value New Value Removed CVSS V3 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Changed CPE Configuration OR *cpe:2.3:a:canonical:cloud-init:*:*:*:*:*:*:*:* versions from (including) 0.6.2 OR *cpe:2.3:a:canonical:cloud-init:*:*:*:*:*:*:*:* versions from (including) 0.6.2 up to (excluding) 18.4 -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CVSS V3 Red Hat, Inc. AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Added CWE Red Hat, Inc. CWE-321 -
CWE Remap by [email protected]
Oct. 03, 2019
Action Type Old Value New Value Changed CWE CWE-284 CWE-284 NVD-CWE-noinfo -
Initial Analysis by [email protected]
Nov. 01, 2018
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:P/I:P/A:N) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10896 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10896 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://bugs.launchpad.net/cloud-init/+bug/1781094 No Types Assigned https://bugs.launchpad.net/cloud-init/+bug/1781094 Patch, Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1574338 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1574338 Issue Tracking, Third Party Advisory Added CWE CWE-284 Added CPE Configuration OR *cpe:2.3:a:canonical:cloud-init:*:*:*:*:*:*:*:* versions from (including) 0.6.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-10896 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-10896
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.17625
percentile