#auth

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring which includes support for a wide range of network hardware and operating systems. In affected versions the login method has no rate limit. An attacker may be able to leverage this vulnerability to gain access to user accounts. This issue has been addressed in version 23.11.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

joaquimserafim/json-web-token is a javascript library use to interact with JSON Web Tokens (JWT) which are a compact URL-safe means of representing claims to be transferred between two parties. Affected versions of the json-web-token library are vulnerable to a JWT algorithm confusion attack. On line 86 of the 'index.js' file, the algorithm to use for verifying the signature of the JWT token is taken from the JWT token, which at that point is still unverified and thus shouldn't be trusted. To exploit this vulnerability, an attacker needs to craft a malicious JWT token containing the HS256 algorithm, signed with the public RSA key of the victim application. This attack will only work against this library is the RS256 algorithm is in use, however it is a best practice to use that algorithm.

### Summary This vulnerability occurs when application is not checking access of each type of users as per their role and it autorizing the users to access any feature. When user access his Device dashboard in librenms, one request is going to graph.php to access image of graphs generated on the particular Device. This request can be accessed by lower privileged users as well and they can enumerate devices on librenms with their id or hostname. ### Details _Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer._ ### PoC 1. Login with Lower privilege user 2. Go to /graph.php?width=150&height=45&device=1&type=device_ping_perf&from=1699022192&legend=no&bg=FFFFFF00&popup_title=ICMP+Response 3. If its showing image with "device*ping_perf" which confirms that there is device with id 1 4. Now you can change device parameter in above URL with hostname to check if that Hostname/IP exist or not like http://127.0.0.1:8000/graph.php?wi...

### Summary Application is using two login methods and one of them is using GET request for authentication. There is no rate limiting security feature at GET request or backend is not validating that. ### PoC Go to /?username=admin&password=password&submit= Capture request in Burpsuite intruder and add payload marker at password parameter value. Start the attack after adding your password list We have added 74 passwords Check screenshot for more info <img width="1241" alt="Screenshot 2023-11-06 at 8 55 19 PM" src="https://user-images.githubusercontent.com/31764504/280905148-42274f1e-f869-4145-95b4-71c0bffde3a0.png"> ### Impact An attacker can Bruteforce user accounts and using GET request for authentication is not recommended because certain web servers logs all requests in old logs which can also store victim user credentials.

The ALPHV/BlackCat ransomware group has filed a non compliance complant with the SEC against one of its victims.

Magento version 2.4.6 suffers from an XSLT server side injection vulnerability that allows for remote command execution.

Adobe ColdFusion versions 2023.5 (and earlier) and 2021.11 (and earlier) are affected by an Improper Input Validation vulnerability that could result in a Security feature bypass. An unauthenticated attacker could leverage this vulnerability to impact a minor integrity feature. Exploitation of this issue does require user interaction.

Adobe FrameMaker versions 2022 and earlier are affected by an Improper Authentication vulnerability that could result in a Security feature bypass. An unauthenticated attacker can abuse this vulnerability to access the API and leak default admin's password. Exploitation of this issue does not require user interaction.

Adobe RoboHelp Server versions 11.4 and earlier are affected by an Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability that could lead to information disclosure by an unauthenticated attacker. Exploitation of this issue does not require user interaction.

Cisco Talos has recently observed an increase in activity conducted by 8Base, a ransomware group that uses a variant of the Phobos ransomware and other publicly available tools to facilitate their operations.