Zammad: Channel admins can read unauthorized attachments via signature rich-text body
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| zammad | zammad | affected |
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No data.
No data.
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| Zammad | Zammad |
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No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.321% probability within 30 days)
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| Metrics |
ssvc
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| First Time appeared |
Zammad
Zammad zammad |
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| Vendors & Products |
Zammad
Zammad zammad |
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| Description | Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when creating or updating an email signature, Zammad processes inline images referenced in the signature body. If a signature body contains an HTML img tag pointing to any existing attachment, the system copies that attachment into a new signature-owned record, without checking whether the user has permission to access the original attachment. The newly created copy is then downloadable by the same channel-admin user, because attachment access is determined by the copy's owner (the signature), not the original object (e.g., a ticket or knowledge-base article). This allows a user with any of the admin.channel_email, admin.channel_google, admin.channel_microsoft365, or admin.channel_microsoft_graph permissions to read attachments they would otherwise be denied access to, such as ticket attachments belonging to groups they are not a member of. This issue is fixed in version 7.1.2. | |
| Title | Zammad: Channel admins can read unauthorized attachments via signature rich-text body | |
| Weaknesses | CWE-639 CWE-862 |
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| References |
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| Metrics |
cvssV4_0
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