High · published December 2, 2025
⚠️ A crafty parameter can let attackers peek behind the curtain! This user enumeration vulnerability in TCMAN GIM v11 allows unauthenticated users to check if a specific username exists on the system, simply by sending a cunning request. 🔍 Think of it like a bouncer at a club who, instead of just checking IDs, loudly announces whether someone is a VIP or just an ordinary guest. This vulnerability lets attackers gather intel on who's in the database without even stepping inside! An attacker could sniff out valid usernames on your platform, making it easier to launch targeted attacks like password resets or phishing attempts later. Even though this flaw is not currently exploited, the potential for information gathering can lead to bigger security breaches.
Think of it like a bouncer at a club who, instead of just checking IDs, loudly announces whether someone is a VIP or just an ordinary guest. This vulnerability lets attackers gather intel on who's in the database without even stepping inside! This vulnerability occurs through the 'pda:username' parameter in the 'soapaction GetUserQuestionAndAnswer' endpoint within TCMAN GIM v11, enabling attackers to confirm if a username exists based on the response received.
An attacker could sniff out valid usernames on your platform, making it easier to launch targeted attacks like password resets or phishing attempts later. Even though this flaw is not currently exploited, the potential for information gathering can lead to bigger security breaches. To secure your system, update TCMAN GIM to version 20250305 or later. Additionally, consider implementing rate limiting on the affected endpoint and adding generic responses to user queries to obfuscate valid usernames. You've got this! Follow those steps, and you'll shore up your defenses in no time! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| tcman/gim | < 2025-04-01 | 2025-04-01 |