Red Hat Web Terminal default permission

Summaryinfo

A vulnerability identified as critical has been detected in Red Hat Web Terminal. This issue affects some unknown processing. This manipulation causes default permission. The identification of this vulnerability is CVE-2025-57853. The attack can only be executed locally. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Red Hat Web Terminal (affected version not known). Affected by this vulnerability is some unknown functionality. The manipulation with an unknown input leads to a default permission vulnerability. The CWE definition for the vulnerability is CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at access.redhat.com. This vulnerability is known as CVE-2025-57853 since 08/21/2025. The exploitation appears to be difficult. Attacking locally is a requirement. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/09/2026). The attack technique deployed by this issue is T1222 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1033). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Red Hat Ansible Automation Platform
• Red Hat Enterprise Linux
• Red Hat OpenShift
• Red Hat Process Automation Manager

Productinfo

Vendor

• Red Hat

Name

• Web Terminal

License

• open-source

Website

• Vendor: https://www.redhat.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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