CVE-2017-15131
Red Hat Enterprise Linux umask Policy Bypass in XDG User Directoriesenos
Description
It was found that system umask policy is not being honored when creating XDG user directories, since Xsession sources xdg-user-dirs.sh before setting umask policy. This only affects xdg-user-dirs before 0.15.5 as shipped with Red Hat Enterprise Linux.
INFO
Published Date :
Jan. 9, 2018, 9:29 p.m.
Last Modified :
Nov. 21, 2024, 3:14 a.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2017-15131
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.0 | HIGH | [email protected] |
Solution
- Update the affected xdg-user-dirs package.
- Run system updates to apply the latest patches.
Public PoC/Exploit Available at Github
CVE-2017-15131 has a 4 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2017-15131.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-15131 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-2017-15131
weaknesses.
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).
Build a local copy of MITRE ATT&CK and CAPEC. Server mode for easy querying.
Dockerfile Makefile Go Python
github runner
Dockerfile Shell
None
Dockerfile Java HTML
Build a local copy of MITRE ATT&CK and CAPEC. Server mode for easy querying.
Makefile Go Dockerfile Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-15131 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-15131 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2018:0842 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1412762 Added Reference https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 12, 2023
Action Type Old Value New Value Changed Description It was found that the system umask policy is not being honored when creating XDG user directories (~/Desktop etc) on first login. This could lead to user's files being inadvertently exposed to other local users. It was found that system umask policy is not being honored when creating XDG user directories, since Xsession sources xdg-user-dirs.sh before setting umask policy. This only affects xdg-user-dirs before 0.15.5 as shipped with Red Hat Enterprise Linux. Removed CVSS V3 Red Hat, Inc. AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Removed Reference https://access.redhat.com/security/cve/CVE-2017-15131 [No Types Assigned] Removed Reference https://bugzilla.redhat.com/show_bug.cgi?id=1455094 [No Types Assigned] Added CWE Red Hat, Inc. CWE-284 -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed Description It was found that system umask policy is not being honored when creating XDG user directories, since Xsession sources xdg-user-dirs.sh before setting umask policy. This only affects xdg-user-dirs before 0.15.5 as shipped with Red Hat Enterprise Linux. It was found that the system umask policy is not being honored when creating XDG user directories (~/Desktop etc) on first login. This could lead to user's files being inadvertently exposed to other local users. Added CVSS V3 Red Hat, Inc. AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Removed Reference https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E [No Types Assigned] Added Reference https://access.redhat.com/security/cve/CVE-2017-15131 [No Types Assigned] Added Reference https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E [No Types Assigned] Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1455094 [No Types Assigned] Removed CWE Red Hat, Inc. CWE-284 Removed CWE Reason CWE-284 / Assessment performed prior to CVMAP efforts -
CVE Modified by [email protected]
Feb. 25, 2021
Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E [No Types Assigned] -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CWE Red Hat, Inc. CWE-284 -
CWE Remap by [email protected]
Oct. 03, 2019
Action Type Old Value New Value Changed CWE CWE-264 CWE-276 -
CVE Modified by [email protected]
Apr. 12, 2018
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2018:0842 [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 05, 2018
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1412762 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1412762 Issue Tracking Added CWE CWE-264 Added CPE Configuration OR *cpe:2.3:a:freedesktop:xdg-user-dirs:*:*:*:*:*:*:*:* versions up to (excluding) 0.15.5 Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
Vulnerability Scoring Details
Base CVSS Score: 7.8
Base CVSS Score: 4.6
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} 0.10%
score
0.31952
percentile