An issue was discovered in BACKCLICK Professional 5.9.63. Due to the use of consecutive IDs in verification links, the newsletter sign-up functionality is vulnerable to the enumeration of subscribers' e-mail addresses. Furthermore, it is possible to subscribe and verify other persons' e-mail addresses to newsletters without their consent.
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
Link | Tags |
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https://www.syss.de/pentest-blog/vielfaeltige-schwachstellen-in-backclick-professional-syss-2022-026-bis-037 | third party advisory |
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2022-026.txt | third party advisory exploit |