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CVE/2019-12743
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| User Enumeration leading to Account Takeover. | |
| Product: HumHub Social Network Kit Enterprise v1.3.13 | |
| (Not tested earlier version and community edition, but it could be affected as well) | |
| Class: Information Disclosure | |
| Payload: http(s)://{domain}/u/{username}/ | |
| Details: Allows remote attacker to find the user accounts existing on the Social Network Kits (including self-hosted one) | |
| by a difference in path request messages after the /u/ initial URI substring, aka Response Discrepancy | |
| Information Exposure. | |
| As a result, the attacker is possible to compromise the user accounts by brute-forcing the password | |
| with usernames found. | |
| Ref: https://github.com/humhub/humhub/commit/97a33c0ad3c548fd8a38a5242972a662d9d39785 |