6.4
Medium
CVE-2025-57853 A container privilege escalation flaw was found in certain Web Terminal images
Description
A container privilege escalation flaw was found in certain Web Terminal images. This issue stems from the /etc/passwd file being created with group-writable permissions during build time. In certain conditions, an attacker who can execute commands within an affected container, even as a non-root user, can leverage their membership in the root group to modify the /etc/passwd file. This could allow the attacker to add a new user with any arbitrary UID, including UID 0, leading to full root privileges within the container.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Web Terminal | Versions not published |
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