CVE-2019-18837
"Crun Container Symlink Escalation"
Description
An issue was discovered in crun before 0.10.5. With a crafted image, it doesn't correctly check whether a target is a symlink, resulting in access to files outside of the container. This occurs in libcrun/linux.c and libcrun/chroot_realpath.c.
INFO
Published Date :
Nov. 13, 2019, 8:15 p.m.
Last Modified :
Nov. 7, 2023, 3:07 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
3.9
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-2019-18837.
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-2019-18837 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-18837 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 Source Update by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Changed Source McAfee (DEFUNCT) Trellix -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Trellix https://github.com/containers/crun/pull/173 [No types assigned] Added Reference Trellix https://github.com/containers/crun/releases/tag/0.10.5 [No types assigned] Added Reference Trellix https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITB2UNEGHXZUR3ATYHWPSK5LJB36N7AP/ [No types assigned] Added Reference Trellix https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DTA5SJUAKQUK6HRY2CZVJUIZP5BO3EOG/ [No types assigned] Removed Reference McAfee (DEFUNCT) https://github.com/containers/crun/releases/tag/0.10.5 Removed Reference McAfee (DEFUNCT) https://github.com/containers/crun/pull/173 Removed Reference McAfee (DEFUNCT) https://lists.fedoraproject.org/archives/list/[email protected]/message/DTA5SJUAKQUK6HRY2CZVJUIZP5BO3EOG/ Removed Reference McAfee (DEFUNCT) https://lists.fedoraproject.org/archives/list/[email protected]/message/ITB2UNEGHXZUR3ATYHWPSK5LJB36N7AP/ -
Initial Analysis by [email protected]
Nov. 18, 2019
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N Changed Reference Type https://github.com/containers/crun/pull/173 No Types Assigned https://github.com/containers/crun/pull/173 Patch Changed Reference Type https://github.com/containers/crun/releases/tag/0.10.5 No Types Assigned https://github.com/containers/crun/releases/tag/0.10.5 Release Notes Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/DTA5SJUAKQUK6HRY2CZVJUIZP5BO3EOG/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/DTA5SJUAKQUK6HRY2CZVJUIZP5BO3EOG/ Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/ITB2UNEGHXZUR3ATYHWPSK5LJB36N7AP/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/ITB2UNEGHXZUR3ATYHWPSK5LJB36N7AP/ Third Party Advisory Added CWE NIST CWE-59 Added CPE Configuration OR *cpe:2.3:a:crun_project:crun:*:*:*:*:*:*:*:* versions up to (excluding) 0.10.5 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-18837 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-2019-18837
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.26 }} 0.03%
score
0.66316
percentile