Blind, read-only SQL injection in Zabbix API via sortfield parameter

A low privilege Zabbix user with API access can exploit a blind SQL injection vulnerability in include/classes/api/CApiService.php to execute arbitrary SQL selects via the sortfield parameter. Although query results are not returned directly, an attacker can exfiltrate arbitrary database data through time-based techniques, potentially leading to session identifier disclosure and administrator account compromise.

API and Frontend login lockout race condition

Zabbix API and Frontend login lockout mechanism has a flaw where several unsuccessful login requests are not properly counted towards the block counter if sent simultaneously, potentially allowing for more password guesses than intended.

Email media OAuth secret leak to Super Admin

The email media OAuth field 'Client secret' cannot be read after saving, but a Super Admin can leak it by setting a malicious 'Token endpoint'. Changes were made to reset the client secret upon changing the token endpoint.

Prototype pollution leading to stored XSS

Prototype pollution vulnerability in searchParamsToObject() is leading to a persistent XSS in Maps. URL parameter processing was not filtering dangerous properties like __proto__, combined with jQuery's unsafe element creation that traversed the prototype chain.

Frontend DoS via the popup.testtriggerexpr action

An unauthenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend popup.testtriggerexpr action, leading to potential denial of service.

Unauthorized host creation via configuration.import API by low-privilege user with write permissions

An authenticated Zabbix user (User role) with template/host write permissions is able to create objects via the configuration.import API. This can lead to confidentiality loss by creating unauthorized hosts. Note that the User role is normally not sufficient to create and edit templates/hosts even with write permissions.

SQL injection vulnerability in the get_history_lastid function in the nodewatcher component in Zabbix Server before 1.6.8 allows remote attackers to execute arbitrary SQL commands via a crafted request, possibly related to the send_history_last_id function in zabbix_server/trapper/nodehistory.c.

Buffer overflow in ZABBIX before 1.1.5 has unknown impact and attack vectors related to "SNMP IP addresses."

The node_process_command function in Zabbix Server before 1.8 allows remote attackers to execute arbitrary commands via a crafted request.

zabbix_agentd in ZABBIX 1.4.4 allows remote attackers to cause a denial of service (CPU and connection consumption) via multiple vfs.file.cksum commands with a special device node such as /dev/urandom or /dev/zero.

Multiple buffer overflows in zabbix before 20061006 allow attackers to cause a denial of service (application crash) and possibly execute arbitrary code via long strings to the (1) zabbix_log and (2) zabbix_syslog functions.

The NET_TCP_LISTEN function in net.c in Zabbix Agent before 1.6.7, when running on FreeBSD or Solaris, allows remote attackers to bypass the EnableRemoteCommands setting and execute arbitrary commands via shell metacharacters in the argument to net.tcp.listen. NOTE: this attack is limited to attacks from trusted IP addresses.

The zbx_get_next_field function in libs/zbxcommon/str.c in Zabbix Server before 1.6.8 allows remote attackers to cause a denial of service (crash) via a request that lacks expected separators, which triggers a NULL pointer dereference, as demonstrated using the Command keyword.

zabbix_agentd 1.1.4 in ZABBIX before 1.4.3 runs "UserParameter" scripts with gid 0, which might allow local users to gain privileges.

Multiple format string vulnerabilities in zabbix before 20061006 allow attackers to cause a denial of service (application crash) and possibly execute arbitrary code via format string specifiers in information that would be recorded in the system log using (1) zabbix_log or (2) zabbix_syslog.

The process_trap function in trapper/trapper.c in Zabbix Server before 1.6.6 allows remote attackers to cause a denial of service (crash) via a crafted request with data that lacks an expected : (colon) separator, which triggers a NULL pointer dereference.

DLL injection in Zabbix Agent and Agent 2 via OpenSSL configuration

In Zabbix Agent and Agent 2 on Windows, the OpenSSL configuration file is loaded from a path writable by low-privileged users, allowing malicious modification and potential local privilege escalation by injecting a DLL.

Agent builds for AIX vulnerable to library loading hijacking

Library loading on AIX Zabbix Agent builds can be hijacked by local users with write access to the /home/cecuser directory.

Regex DoS in Grafana Zabbix Plugin

Grafana is an open-source platform for monitoring and observability. Grafana-Zabbix is a plugin for Grafana allowing to visualize monitoring data from Zabbix and create dashboards for analyzing metrics and realtime monitoring.  Versions 5.2.1 and below contained a ReDoS vulnerability via user-supplied regex query which could causes CPU usage to max out. This vulnerability is fixed in version 6.0.0.

Zabbix Agent 2 smartctl plugin argument injection in Zabbix 6.0 and later.

Zabbix Agent 2 smartctl plugin does not properly sanitize smart.disk.get parameters, allowing an attacker to inject unexpected arguments into the smartctl command. This can be used to leak the NTLMv2 hash from a Windows system.