Description
GestSup versions before 3.2.62 contain a stored cross-site scripting vulnerability in the IMAP OAuth connector that double-decodes MIME-encoded email subjects after HTML escaping. Unauthenticated attackers can send crafted emails to monitored mailboxes with nested MIME encoded-words to inject JavaScript that executes in technician sessions when viewing tickets.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GestSup | GestSup | < 3.2.62 | 3.2.62 |
References
- https://gestsup.fr/index.php?page=changelog release-notes
- https://gestsup.fr/index.php?page=download product
- https://gestsup.fr/index.php?page=download&channel=stable&version=3.2.62&type=patch patch
- VulnCheck Advisory: GestSup before 3.2.62 Stored XSS via Double-Decoded Email Subject in OAuth IMAP Connector third-party-advisory
- https://blog.spiizn.xyz/articles/remote-code-execution-turning-a-ticket-into-a-new-issue/ technical-description exploit