Authenticated browser script execution via unescaped sender name
Published Nov 29, 2024 · Updated Nov 29, 2024
Stored cross-site scripting in Zulip 8.3 allows remote authenticated users to execute script in another user’s browser during message copying. The construct_copy_div function passes message.sender_full_name directly to jQuery prepend(), which parses the value as HTML instead of creating a text node. Exploitation requires an attacker-controlled sender name and a victim who copies the affected message selection; the script runs in the victim’s Zulip origin.
Summary
What happened
Stored cross-site scripting in Zulip 8.3 allows remote authenticated users to execute script in another user’s browser during message copying. The construct_copy_div function passes message.sender_full_name directly to jQuery prepend(), which parses the value as HTML instead of creating a text node. Exploitation requires an attacker-controlled sender name and a victim who copies the affected message selection; the script runs in the victim’s Zulip origin.
The record
- CVE
- CVE-2024-36624
- Published
- Nov 29, 2024
- Updated
- Nov 29, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 29, 2024CVE publishedPublication date reported by the CVE source.
- Nov 29, 2024Record updatedLatest update available in the CVE record.
Exploitability
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