medium6.1Public exploit code
CVE-2021-26929
An XSS issue was discovered in Horde Groupware Webmail Edition through 5.2.22 (where the Horde_Text_Filter library before 2.3.7 is used).
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- Horde Groupware Webmail 5.2.22 - Stored XSS2021-04-15 · webapps · multiple
Impact
An XSS issue was discovered in Horde Groupware Webmail Edition through 5.2.22 (where the Horde_Text_Filter library before 2.3.7 is used). The attacker can send a plain text e-mail message, with JavaScript encoded as a link or email that is mishandled by preProcess in Text2html.php, because bespoke use of \x00\x00\x00 and \x01\x01\x01 interferes with XSS defenses.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Horde | Groupware | through 5.2.22 |
| Debian | Debian Linux | Version 9.0 |
Weakness classification
References
- NVD record
- CVE.org record
- http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html
- https://github.com/horde/webmail/releases
- https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html
- https://lists.horde.org/archives/announce/2021/001298.html
- https://www.alexbirnberg.com/horde-xss.html
- https://www.horde.org/apps/webmail
- http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html
- https://github.com/horde/webmail/releases
- https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html
- https://lists.horde.org/archives/announce/2021/001298.html
- https://www.alexbirnberg.com/horde-xss.html
- https://www.horde.org/apps/webmail