CVE-2021-26929
Horde Groupware Webmail Edition XSS Injection
Description
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.
INFO
Published Date :
Feb. 14, 2021, 4:15 a.m.
Last Modified :
April 19, 2021, 8:21 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.7
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2021-26929 has a 6 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-26929.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html | Exploit Third Party Advisory VDB Entry |
| http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html | Third Party Advisory |
| https://github.com/horde/webmail/releases | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html | Mailing List Third Party Advisory |
| https://lists.horde.org/archives/announce/2021/001298.html | Mailing List Vendor Advisory |
| https://www.alexbirnberg.com/horde-xss.html | Exploit Third Party Advisory |
| https://www.horde.org/apps/webmail | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python Shell C Makefile Assembly JavaScript C++ C# Ruby Rich Text Format
None
PowerShell C# Python C++ Ruby Perl C Batchfile HTML JavaScript
None
None
C HTML
https://cve.mitre.org/
Go Python YARA Rich Text Format Shell C Makefile M4 Roff sed
Microsoft » Windows 10 : Security Vulnerabilities
VBScript Ruby Perl C++ Batchfile HTML JavaScript Python C Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-26929 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-26929 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Apr. 19, 2021
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry Changed Reference Type http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html No Types Assigned http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html Third Party Advisory -
CVE Modified by [email protected]
Apr. 15, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html [No Types Assigned] -
CVE Modified by [email protected]
Apr. 14, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/162187/Webmail-Edition-5.2.22-XSS-Remote-Code-Execution.html [No Types Assigned] -
Modified Analysis by [email protected]
Feb. 23, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html Mailing List, Third Party Advisory Changed Reference Type https://lists.horde.org/archives/announce/2021/001298.html Vendor Advisory https://lists.horde.org/archives/announce/2021/001298.html Mailing List, Vendor Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 19, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/02/msg00028.html [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 18, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Changed Reference Type https://github.com/horde/webmail/releases No Types Assigned https://github.com/horde/webmail/releases Third Party Advisory Changed Reference Type https://lists.horde.org/archives/announce/2021/001298.html No Types Assigned https://lists.horde.org/archives/announce/2021/001298.html Vendor Advisory Changed Reference Type https://www.alexbirnberg.com/horde-xss.html No Types Assigned https://www.alexbirnberg.com/horde-xss.html Exploit, Third Party Advisory Changed Reference Type https://www.horde.org/apps/webmail No Types Assigned https://www.horde.org/apps/webmail Vendor Advisory Added CWE NIST CWE-79 Added CPE Configuration OR *cpe:2.3:a:horde:groupware:*:*:*:*:webmail:*:*:* versions up to (including) 5.2.22
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-26929 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-26929
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
3.04 }} 0.87%
score
0.91227
percentile