Summary

Phoenix transports do not limit the number of channels in a given connection, making it easy to spawn hundreds of thousands of processes over a single connection, and, eventually reaching the max processes VM limit. The solution is to limit the number of channels per transport, so an attacker needs to start new HTTP/WebSocket connections, allowing third-party services to apply rate limits and intervene more easily.

Impact

An unauthenticated remote attacker can cause a denial of service against any Phoenix app that exposes LongPoll/WebSocket transports.

The Phoenix Code's configuration on macOS, specifically the presence of entitlements: "com.apple.security.cs.allow-dyld-environment-variables" and "com.apple.security.cs.disable-library-validation" allows for Dynamic Library (Dylib) injection. A local attacker with unprivileged access can use environment variables like DYLDINSERTLIBRARIES to successfully inject code in application's context and bypass Transparency, Consent, and Control (TCC). Acquired resource access is limited to previously granted permissions by the user. Access to other resources beyond granted-permissions requires user interaction with a system prompt asking for permission.

This issue was fixed in commit 0c75fb57f89d0b7d9b180026bc2624b7dcf807da

A Reflected Cross Site Scripting (XSS) vulnerability was found in '/search' in Phoenix Site CMS from Phoenix, which allows remote attackers to execute arbitrary code via 's' GET parameter.

Improper Check for Unusual or Exceptional Conditions vulnerability in Phoenix SecureCore Technology 4 allows Input Data Manipulation.This issue affects SecureCore Technology 4: from 4.0.1.0 before 4.0.1.1018, from 4.1.0.1 before 4.1.0.573, from 4.2.0.1 before 4.2.0.338, from 4.2.1.1 before 4.2.1.300, from 4.3.0.1 before 4.3.0.244, from 4.3.1.1 before 4.3.1.187, from 4.4.0.1 before 4.4.0.299, from 4.5.0.1 before 4.5.0.231, from 4.5.1.1 before 4.5.1.103, from 4.5.5.1 before 4.5.5.36, from 4.6.0.1 before 4.6.0.67.

Improper Check for Unusual or Exceptional Conditions vulnerability in Phoenix SecureCore™ for Intel Kaby Lake, Phoenix SecureCore™ for Intel Coffee Lake, Phoenix SecureCore™ for Intel Comet Lake, Phoenix SecureCore™ for Intel Ice Lake allows Input Data Manipulation.This issue affects SecureCore™ for Intel Kaby Lake: before 4.0.1.1012; SecureCore™ for Intel Coffee Lake: before 4.1.0.568; SecureCore™ for Intel Comet Lake: before 4.2.1.292; SecureCore™ for Intel Ice Lake: before 4.2.0.334.

Improper Check for Unusual or Exceptional Conditions vulnerability in Phoenix SecureCore™ for Intel Kaby Lake, Phoenix SecureCore™ for Intel Coffee Lake, Phoenix SecureCore™ for Intel Comet Lake, Phoenix SecureCore™ for Intel Ice Lake allows Input Data Manipulation.This issue affects SecureCore™ for Intel Kaby Lake: before 4.0.1.1012; SecureCore™ for Intel Coffee Lake: before 4.1.0.568; SecureCore™ for Intel Comet Lake: before 4.2.1.292; SecureCore™ for Intel Ice Lake: before 4.2.0.334.

Potential buffer overflow in unsafe UEFI variable handling

in Phoenix SecureCore™ for Intel Gemini Lake.This issue affects:

SecureCore™ for Intel Gemini Lake: from 4.1.0.1 before 4.1.0.567.

Potential buffer overflow in unsafe UEFI variable handling

in Phoenix SecureCore™ for select Intel platforms

This issue affects:

Phoenix

SecureCore™ for Intel Kaby Lake: from 4.0.1.1 before 4.0.1.998;

Phoenix

SecureCore™ for Intel Coffee Lake: from 4.1.0.1 before 4.1.0.562;

Phoenix

SecureCore™ for Intel Ice Lake: from 4.2.0.1 before 4.2.0.323;

Phoenix

SecureCore™ for Intel Comet Lake: from 4.2.1.1 before 4.2.1.287;

Phoenix

SecureCore™ for Intel Tiger Lake: from 4.3.0.1 before 4.3.0.236;

Phoenix

SecureCore™ for Intel Jasper Lake: from 4.3.1.1 before 4.3.1.184;

Phoenix

SecureCore™ for Intel Alder Lake: from 4.4.0.1 before 4.4.0.269;

Phoenix

SecureCore™ for Intel Raptor Lake: from 4.5.0.1 before 4.5.0.218;

Phoenix

SecureCore™ for Intel Meteor Lake: from 4.5.1.1 before 4.5.1.15.

Exposed IOCTL with Insufficient Access Control in Phoenix WinFlash Driver on Windows allows Privilege Escalation which allows for modification of system firmware.This issue affects WinFlash Driver: before 4.5.0.0.

In Phoenix SCT WinFlash 1.1.12.0 through 1.5.74.0, the included drivers could be used by a malicious Windows application to gain elevated privileges. Adverse impacts are limited to the Windows environment and there is no known direct impact to the UEFI firmware. This was fixed in late June 2019.