Red Hat Security Advisory: OpenShift Container Platform 4.21.21 bug fix and security update

Important

A flaw was found in Go JOSE, a library for handling JSON Web Encryption (JWE) objects. A remote attacker could exploit this vulnerability by providing a specially crafted JWE object. When decrypting such an object, if a key wrapping algorithm is specified but the encrypted key field is empty, the application can crash. This leads to a denial of service (DoS), making the affected service unavailable to legitimate users.

CWE-131 - Incorrect Calculation of Buffer Size

A flaw was found in follow-redirects. When an HTTP request follows a cross-domain redirect (a redirection to a different domain), custom authentication headers, such as X-API-Key or X-Auth-Token, are not properly stripped. This allows these sensitive headers to be forwarded verbatim to the redirect target, potentially leading to the unintended disclosure of authentication information to an untrusted third party.

CWE-212 - Improper Removal of Sensitive Information Before Storage or Transfer

A flaw was found in Axios, a promise-based HTTP client, specifically in its Node.js HTTP adapter. When Axios is configured to use an authenticated proxy and follows a redirect, it may inadvertently send the Proxy-Authorization header, containing proxy credentials, to the redirect target. This can lead to the disclosure of sensitive proxy credentials to an unintended remote server.

CWE-201 - Insertion of Sensitive Information Into Sent Data

A flaw was found in Axios. During specific proxy-to-direct redirect flows in the Node.js HTTP adapter, a remote attacker could exploit this vulnerability. The Proxy-Authorization header, which contains proxy credentials and is intended only for the outbound proxy, may be forwarded to the final redirected origin. This can lead to the disclosure of sensitive proxy credentials to an unintended third party.

CWE-201 - Insertion of Sensitive Information Into Sent Data

A flaw was found in Axios, a promise-based HTTP client. When using the fetch adapter, Axios did not properly enforce configured request and response size limits. This vulnerability allows a remote attacker, through a malicious or compromised server, or by supplying a large data URL, to send or receive oversized data bodies. This can lead to resource exhaustion in server-side applications, resulting in a Denial of Service (DoS).

CWE-770 - Allocation of Resources Without Limits or Throttling

A flaw was found in Axios, a promise-based HTTP client. This vulnerability occurs because Axios does not properly normalize IPv4-mapped IPv6 addresses. When a NO_PROXY setting is configured to block direct access to specific IPv4 addresses, an attacker can bypass this restriction by using the IPv4-mapped IPv6 form of the address in a request URL. This allows the request to be routed through the proxy, potentially exposing internal services or sensitive information that should otherwise be inaccessible.

CWE-289 - Authentication Bypass by Alternate Name

A flaw was found in Axios. This vulnerability, a Prototype Pollution "Gadget" attack, allows an attacker to escalate any existing Object.prototype pollution in an application's dependency tree into a full Man-in-the-Middle (MITM) attack. This enables the attacker to intercept, read, and modify all HTTP traffic, including sensitive authentication credentials. The flaw occurs because the `config.proxy` setting is susceptible to prototype pollution, allowing an attacker to inject a malicious proxy server.

CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes

A flaw was found in Axios, a promise-based HTTP client. This vulnerability involves prototype pollution gadgets in the request configuration processing. If another vulnerability has already polluted the Object.prototype.transformResponse, affected Axios versions may incorrectly interpret this inherited value as part of the request configuration or as an option validator. Axios does not itself create the prototype pollution. Exploitability requires a separate prototype-pollution vulnerability or equivalent attacker control over Object.prototype before Axios creates a request.

CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes

A flaw was found in Axios. A remote attacker, by influencing the XSRF cookie name in a browser environment, could cause the application to construct a regular expression that leads to excessive processing. This can result in a client-side Denial of Service (DoS), where the affected browser tab may freeze, impacting the availability of the application for the user.

CWE-1333 - Inefficient Regular Expression Complexity

A flaw was found in the OpenShift Router. When a Route has `insecureEdgeTerminationPolicy` set to Allow, the HTTP frontend does not remove `X-SSL-Client-*` headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted `X-SSL-Client-*` headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certificate identities.

CWE-287 - Improper Authentication