CVE Vulnerability

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). 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 x00x00x00 and x01x01x01 interferes with XSS defenses.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.1 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://github.com/horde/webmail/releases Third Party Advisory
https://lists.horde.org/archives/announce/2021/001298.html Mailing List Vendor Advisory
https://www.horde.org/apps/webmail Vendor Advisory
https://www.alexbirnberg.com/horde-xss.html Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html Mailing List Third Party Advisory
http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html Exploit Third Party Advisory
http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:horde:groupware:*:*:*:*:webmail:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Information

Published : 2021-02-14 04:15

Updated : 2021-04-19 08:21

NVD link : CVE-2021-26929

Mitre link : CVE-2021-26929

Products Affected
No products.
CWE
CWE-79