==================================================================== CERT-Renater Note d'Information No. 2021/VULN126 _____________________________________________________________________ DATE : 03/03/2021 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Systems running Joomla! versions prior to 3.9.25. ===================================================================== https://developer.joomla.org/security-centre/841-20210301-core-insecure-randomness-within-2fa-secret-generation.html https://developer.joomla.org/security-centre/849-20210309-core-inadequate-filtering-of-form-contents-could-allow-to-overwrite-the-author-field.html https://developer.joomla.org/security-centre/848-20210308-core-path-traversal-within-joomla-archive-zip-class.html https://developer.joomla.org/security-centre/847-20210307-core-acl-violation-within-com-content-frontend-editing.html https://developer.joomla.org/security-centre/846-20210306-core-com-media-allowed-paths-that-are-not-intended-for-image-uploads.html https://developer.joomla.org/security-centre/845-20210305-core-input-validation-within-the-template-manager.html https://developer.joomla.org/security-centre/844-20210304-core-xss-within-the-feed-parser-library.html https://developer.joomla.org/security-centre/843-20210303-core-xss-within-alert-messages-showed-to-users.html https://developer.joomla.org/security-centre/842-20210302-core-potential-insecure-fofencryptrandval.html _____________________________________________________________________ [20210301] - Core - Insecure randomness within 2FA secret generation Project: Joomla! SubProject: CMS Impact: Low Severity: Low Versions: 3.2.0 - 3.9.24 Exploit type: Insecure Randomness Reported Date: 2021-01-12 Fixed Date: 2021-03-02 CVE Number: CVE-2021-23126, CVE-2021-23127 Description Usage of the insecure rand() function within the process of generating the 2FA secret. Usage of an insufficient length for the 2FA secret accoring to RFC 4226 of 10 bytes vs 20 bytes. This issue has been coordinated with Akeeba Ltd as contributor of the original FOF codebase to the core. Affected Installs Joomla! CMS versions 3.2.0 - 3.9.24 Solution Upgrade to version 3.9.25 Contact The JSST at the Joomla! Security Centre. Reported By: Hanno Böck _____________________________________________________________________ [20210309] - Core - Inadequate filtering of form contents could allow to overwrite the author field Project: Joomla! SubProject: CMS Impact: Moderate Severity: Low Versions: 1.6.0 - 3.9.24 Exploit type: ACL Violation Reported Date: 2021-01-31 Fixed Date: 2021-03-02 CVE Number: CVE-2021-26029 Description Inadequate filtering of form contents could allow to overwrite the author field. The affected core components are com_fields, com_categories, com_banners, com_contact, com_newsfeeds and com_tags. Affected Installs Joomla! CMS versions 1.6.0 - 3.9.24 Solution Upgrade to version 3.9.25 Contact The JSST at the Joomla! Security Centre. Reported By: DangKhai from Viettel Cyber Security _____________________________________________________________________ [20210308] - Core - Path Traversal within joomla/archive zip class Project: Joomla! SubProject: CMS Impact: Moderate Severity: Low Versions: 3.0.0 - 3.9.24 Exploit type: Path Traversal Reported Date: 2020-09-08 Fixed Date: 2021-03-02 CVE Number: CVE-2021-26028 Description Extracting an specifilcy crafted zip package could write files outside of the intended path. Affected Installs Joomla! CMS versions 3.0.0 - 3.9.24 Solution Upgrade to version 3.9.25 Contact The JSST at the Joomla! Security Centre. Reported By: Šarūnas Paulauskas _____________________________________________________________________ [20210307] - Core - ACL violation within com_content frontend editing Project: Joomla! SubProject: CMS Impact: Moderate Severity: Low Versions: 3.0.0 - 3.9.24 Exploit type: ACL violation Reported Date: 2020-10-25 Fixed Date: 2021-03-02 CVE Number: CVE-2021-26027 Description Incorrect ACL checks could allow unauthorized change of the category for an article. Affected Installs Joomla! CMS versions 3.0.0 - 3.9.24 Solution Upgrade to version 3.9.25 Contact The JSST at the Joomla! Security Centre. Reported By: Brian Teeman, George Wilson (JSST), David Jardin (JSST) _____________________________________________________________________ [20210306] - Core - com_media allowed paths that are not intended for image uploads Project: Joomla! SubProject: CMS Impact: Moderate Severity: Low Versions: 3.0.0 - 3.9.24 Exploit type: Improper Input Validation Reported Date: 2020-02-17 Fixed Date: 2021-03-02 CVE Number: CVE-2021-23132 Description com_media allowed paths that are not intended for image uploads. Affected Installs Joomla! CMS versions 3.0.0 - 3.9.24 Solution Upgrade to version 3.9.25 Contact The JSST at the Joomla! Security Centre. Reported By: Hoang Kien from VSEC _____________________________________________________________________ [20210305] - Core - Input validation within the template manager Project: Joomla! SubProject: CMS Impact: Low Severity: Low Versions: 3.2.0 - 3.9.24 Exploit type: Improper Input Validation Reported Date: 2020-05-07 Fixed Date: 2021-03-02 CVE Number: CVE-2021-23131 Description Missing input validation within the template manager. Affected Installs Joomla! CMS versions 3.2.0 - 3.9.24 Solution Upgrade to version 3.9.25 Contact The JSST at the Joomla! Security Centre. Reported By: Bui Duc Anh Khoa from Viettel Cyber Security _____________________________________________________________________ [20210304] - Core - XSS within the feed parser library Project: Joomla! SubProject: CMS Impact: Moderate Severity: Low Versions: 2.5.0 - 3.9.24 Exploit type: XSS Reported Date: 2020-05-05 Fixed Date: 2021-03-02 CVE Number: CVE-2021-23130 Description Missing filtering of feed fields could lead to xss issues. Affected Installs Joomla! CMS versions 2.5.0 - 3.9.24 Solution Upgrade to version 3.9.25 Contact The JSST at the Joomla! Security Centre. Reported By: Bui Duc Anh Khoa from Viettel Cyber Security _____________________________________________________________________ [20210303] - Core - XSS within alert messages showed to users Project: Joomla! SubProject: CMS Impact: Moderate Severity: Low Versions: 2.5.0 - 3.9.24 Exploit type: XSS Reported Date: 2020-05-07 Fixed Date: 2021-03-02 CVE Number: CVE-2021-23129 Description Missing filtering of messages showed to users that could lead to xss issues. Affected Installs Joomla! CMS versions 2.5.0 - 3.9.24 Solution Upgrade to version 3.9.25 Contact The JSST at the Joomla! Security Centre. Reported By: Bui Duc Anh Khoa from Viettel Cyber Security _____________________________________________________________________ [20210302] - Core - Potential Insecure FOFEncryptRandval Project: Joomla! SubProject: CMS Impact: Low Severity: Low Versions: 3.2.0 - 3.9.24 Exploit type: Insecure Randomness Reported Date: 2021-01-13 Fixed Date: 2021-03-02 CVE Number: CVE-2021-23128 Description The core shipped but unused randval implementation within FOF (FOFEncryptRandval) used an potential insecure implemetation. That has now been replaced with a call to "random_bytes()" and its backport that is shipped within random_compat. This issue has been coordinated with Akeeba Ltd as contributor of the original FOF codebase to the core. Affected Installs Joomla! CMS versions 3.2.0 - 3.9.24 Solution Upgrade to version 3.9.25 Contact The JSST at the Joomla! Security Centre. Reported By: Hanno Böck ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 23/25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email:cert@support.renater.fr + =========================================================