Switch Engine (EXOS) JSON-RPC Authorization Bypass Allows Read-Only Users to Disclose Sensitive Information

Missing authorization in the JSON-RPC web services interface of Extreme Networks Switch Engine (EXOS) allows an authenticated, low-privileged (read-only) user to execute CLI show commands that are restricted to that role through the command line interface. Successful exploitation results in disclosure of sensitive information, including the device configuration and the password hashes of local accounts. Configuration, enable, and debug commands are not affected. Disclosed password hashes can be attacked offline, and a weak password could lead to administrative access to the device. This issue is fixed in Switch Engine 33.7.1-patch1-11, 33.1.100.133-patch1-9, and 32.7.4.15-patch1-11. Extreme Networks would like to thank Toàn Lê (GitHub: https://github.com/toanln-cov) for responsibly disclosing this vulnerability and for working with our PSIRT team through coordinated disclosure.

Buffer Overflow in Bonjour Gateway via ah_event_send in Extreme Networks IQ Engine

Bonjour Gateway in Extreme Networks IQ Engine before 10.6r1a, and through 10.6r4 before 10.6r5, has an ah_bgd buffer overflow via ah_event_send.

XIQ‑SE NAC Admin Credential Exposure via HTTP Response

In ExtremeCloud IQ – Site Engine (XIQ‑SE) before 26.2.10, a vulnerability in the NAC administration interface allows an authenticated NAC administrator to retrieve masked sensitive parameters from HTTP responses. Although credentials appear redacted in the user interface, the application returns the underlying credential values in the HTTP response, enabling an authorized administrator to recover stored secrets that may exceed their intended access. We would like to thank the Lockheed Martin Red Team for responsibly reporting this issue and working with us through coordinated disclosure.

Unknown vulnerability in Extreme BlackDiamond 10808 and 8800 switches running ExtremeWare XOS 11.1 before 11.1.3.3, 11.0 before 11.0.2.4, and 10.x allows remote authenticated users to execute arbitrary commands.

Extreme Networks Aerohive HiveOS <=11.x 11.x Unauthenticated Remote Denial of Service

Aerohive HiveOS contains a denial of service vulnerability in the NetConfig UI that allows unauthenticated attackers to render the web interface unusable. Attackers can send a crafted HTTP request to the action.php5 script with specific parameters to trigger a 5-minute service disruption.

The BGP daemon in Extreme Networks ExtremeXOS (aka EXOS) 30.7.1.1 allows an attacker (who is not on a directly connected network) to cause a denial of service (BGP session reset) because of BGP attribute error mishandling (for attribute 21 and 25). NOTE: the vendor disputes this because it is "evaluating support for RFC 7606 as a future feature" and believes that "customers that have chosen to not require or implement RFC 7606 have done so willingly and with knowledge of what is needed to defend against these types of attacks."

ExtremeGuest Essentials Captive Portal Unauthenticated Brute Force

In ExtremeGuest Essentials before 25.5.0, captive-portal may permit unauthorized access via manual brute-force procedure. Under certain ExtremeGuest Essentials captive-portal SSID configurations, repeated manual login attempts may allow an unauthenticated device to be marked as authenticated and obtain network access. Client360 logs may display the client MAC as the username despite no MAC-authentication being enabled.

Fabric Engine (VOSS) AutoSense Authentication Bypass

A vulnerability in Extreme Networks’ Fabric Engine (VOSS) before 9.3 was discovered. When SD-WAN AutoSense is enabled on a port, it may automatically configure fabric connectivity without validating ISIS authentication settings. The SD-WAN AutoSense implementation may be exploited by malicious actors by allowing unauthorized access to network fabric and configuration data.

ExtremeControl (NAC) 'onmouseover' XSS

In ExtremeControl before 25.5.12, a cross-site scripting (XSS) vulnerability was discovered in a login interface of the affected application. The issue stems from improper handling of user-supplied input within HTML attributes, allowing an attacker to inject script code that may execute in a user's browser under specific interaction conditions. Successful exploitation could lead to exposure of user data or unauthorized actions within the browser context.

ExtremeCloud Universal ZTNA Improper Authorization

In ExtremeCloud Universal ZTNA, a syntax error in the 'searchKeyword' condition caused queries to bypass the owner_id filter. This issue may allow users to search data across the entire table instead of being restricted to their specific owner_id.

In XIQ-SE before 24.2.11, a low-privileged user may be able to access admin passwords, which could lead to privilege escalation.

In XIQ-SE before 24.2.11, a server misconfiguration may allow user enumeration when specific conditions are met.

In Extreme Networks XIQ-SE before 24.2.11, due to a missing access control check, a path traversal is possible, which may lead to privilege escalation.

Extreme Networks EXOS before v.22.7 and before v.30.2 was discovered to contain an issue in its Web GUI which fails to restrict URL access, allowing attackers to access sensitive information or escalate privileges.

In Extreme XOS through 22.6.1.4, a read-only user can escalate privileges to root via a crafted HTTP POST request to the python method of the Machine-to-Machine Interface (MMI).

Extreme EXOS 16.x, 21.x, and 22.x allows administrators to obtain a root shell via vectors involving a privileged process.

Extreme EXOS 15.7, 16.x, 21.x, and 22.x allows remote attackers to trigger a buffer overflow leading to a reboot.

Extreme EXOS 15.7, 16.x, 21.x, and 22.x allows remote attackers to hijack sessions by determining SessionID values.

Extreme EXOS 16.x, 21.x, and 22.x allows administrators to bypass the "exsh restricted shell" protection mechanism and obtain an interactive shell.

Extreme EXOS 16.x, 21.x, and 22.x allows administrators to obtain a root shell via vectors involving an exsh debug shell.