------------------------------------------------------------------------- Debian LTS Advisory DLA-3538-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Tobias Frost August 22, 2023 https://wiki.debian.org/LTS ------------------------------------------------------------------------- Package : zabbix Version : 1:4.0.4+dfsg-1+deb10u2 CVE ID : CVE-2013-7484 CVE-2019-17382 CVE-2022-35229 CVE-2022-43515 CVE-2023-29450 CVE-2023-29451 CVE-2023-29454 CVE-2023-29455 CVE-2023-29456 CVE-2023-29457 Debian Bug : 1026847 Several security vulnerabilities have been discovered in zabbix, a network monitoring solution, potentially allowing to crash the server, information disclosure or Cross-Site-Scripting attacks. Important Notices: To mitigate CVE-2019-17382, on existing installations, the guest account needs to be manually disabled, for example by disabling the the "Guest group" in the UI: Administration -> User groups -> Guests -> Untick Enabled This update also fixes a regression with CVE-2022-35229, which broke the possiblity to edit and add discovery rules in the UI. CVE-2013-7484 Zabbix before version 4.4.0alpha2 stores credentials in the "users" table with the password hash stored as a MD5 hash, which is a known insecure hashing method. Furthermore, no salt is used with the hash. CVE-2019-17382 (Disputed, not seen by upstream as not a security issue) An issue was discovered in zabbix.php?action=dashboard.view&dashboardid=1 in Zabbix through 4.4. An attacker can bypass the login page and access the dashboard page, and then create a Dashboard, Report, Screen, or Map without any Username/Password (i.e., anonymously). All created elements (Dashboard/Report/Screen/Map) are accessible by other users and by an admin. CVE-2022-35229 An authenticated user can create a link with reflected Javascript code inside it for the discovery page and send it to other users. The payload can be executed only with a known CSRF token value of the victim, which is changed periodically and is difficult to predict. CVE-2022-43515 Zabbix Frontend provides a feature that allows admins to maintain the installation and ensure that only certain IP addresses can access it. In this way, any user will not be able to access the Zabbix Frontend while it is being maintained and possible sensitive data will be prevented from being disclosed. An attacker can bypass this protection and access the instance using IP address not listed in the defined range. CVE-2023-29450 JavaScript pre-processing can be used by the attacker to gain access to the file system (read-only access on behalf of user "zabbix") on the Zabbix Server or Zabbix Proxy, potentially leading to unauthorized access to sensitive data. CVE-2023-29451 Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server or a Zabbix Proxy. CVE-2023-29454 A Stored or persistent cross-site scripting (XSS) vulnerability was found on “Users” section in “Media” tab in “Send to” form field. When new media is created with malicious code included into field “Send to” then it will execute when editing the same media. CVE-2023-29455 A Reflected XSS attacks, also known as non-persistent attacks, was found where an attacker can pass malicious code as GET request to graph.php and system will save it and will execute when current graph page is opened. CVE-2023-29456 URL validation scheme receives input from a user and then parses it to identify its various components. The validation scheme can ensure that all URL components comply with internet standards. CVE-2023-29457 A Reflected XSS attacks, also known as non-persistent attacks, was found where XSS session cookies could be revealed, enabling a perpetrator to impersonate valid users and abuse their private accounts. For Debian 10 buster, these problems have been fixed in version 1:4.0.4+dfsg-1+deb10u2. We recommend that you upgrade your zabbix packages. For the detailed security status of zabbix please refer to its security tracker page at: https://security-tracker.debian.org/tracker/zabbix Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS
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