CVE-2021-26929

CVSS V2 Medium 4.3 CVSS V3 Medium 6.1
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.
Overview
  • CVE ID
  • CVE-2021-26929
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-02-14T04:15:12
  • Last Modified Date
  • 2021-04-19T20:21:24
Weakness Enumerations
CWE URL
CWE-79 http://cwe.mitre.org/data/definitions/79.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:horde:groupware:*:*:*:*:webmail:*:*:* 1 OR 5.2.22
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • CHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • NONE
  • Base Score
  • 6.1
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 2.7
References
Reference URL Reference Tags
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 VDB Entry
http://packetstormsecurity.com/files/162194/Horde-Groupware-Webmail-5.2.22-Cross-Site-Scripting.html Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-26929
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26929
History
Created Old Value New Value Data Type Notes
2022-05-10 07:15:21 Added to TrackCVE
2022-12-05 22:06:16 2021-02-14T04:15Z 2021-02-14T04:15:12 CVE Published Date updated
2022-12-05 22:06:16 2021-04-19T20:21:24 CVE Modified Date updated
2022-12-05 22:06:16 Analyzed Vulnerability Status updated