When the webdriver for the Browser object downloads data from a HTTP server, the data pointer is set to NULL and is allocated only in curlwritecb when receiving data. If the server's response is an empty document, then wd->data in the code below will remain NULL and an attempt to read from it will result in a crash.
{ "binaries": [ { "binary_name": "zabbix-agent", "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5" }, { "binary_name": "zabbix-frontend-php", "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5" }, { "binary_name": "zabbix-java-gateway", "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5" }, { "binary_name": "zabbix-proxy-mysql", "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5" }, { "binary_name": "zabbix-proxy-pgsql", "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5" }, { "binary_name": "zabbix-proxy-sqlite3", "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5" }, { "binary_name": "zabbix-server-mysql", "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5" }, { "binary_name": "zabbix-server-pgsql", "binary_version": "1:2.2.2+dfsg-1ubuntu1+esm5" } ] }
{ "binaries": [ { "binary_name": "zabbix-agent", "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4" }, { "binary_name": "zabbix-frontend-php", "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4" }, { "binary_name": "zabbix-java-gateway", "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4" }, { "binary_name": "zabbix-proxy-mysql", "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4" }, { "binary_name": "zabbix-proxy-pgsql", "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4" }, { "binary_name": "zabbix-proxy-sqlite3", "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4" }, { "binary_name": "zabbix-server-mysql", "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4" }, { "binary_name": "zabbix-server-pgsql", "binary_version": "1:2.4.7+dfsg-2ubuntu2.1+esm4" } ] }
{ "binaries": [ { "binary_name": "zabbix-agent", "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4" }, { "binary_name": "zabbix-frontend-php", "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4" }, { "binary_name": "zabbix-java-gateway", "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4" }, { "binary_name": "zabbix-proxy-mysql", "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4" }, { "binary_name": "zabbix-proxy-pgsql", "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4" }, { "binary_name": "zabbix-proxy-sqlite3", "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4" }, { "binary_name": "zabbix-server-mysql", "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4" }, { "binary_name": "zabbix-server-pgsql", "binary_version": "1:3.0.12+dfsg-1ubuntu0.1~esm4" } ] }
{ "binaries": [ { "binary_name": "zabbix-agent", "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2" }, { "binary_name": "zabbix-frontend-php", "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2" }, { "binary_name": "zabbix-java-gateway", "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2" }, { "binary_name": "zabbix-proxy-mysql", "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2" }, { "binary_name": "zabbix-proxy-pgsql", "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2" }, { "binary_name": "zabbix-proxy-sqlite3", "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2" }, { "binary_name": "zabbix-server-mysql", "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2" }, { "binary_name": "zabbix-server-pgsql", "binary_version": "1:4.0.17+dfsg-1ubuntu0.1~esm2" } ] }
{ "binaries": [ { "binary_name": "zabbix-agent", "binary_version": "1:5.0.17+dfsg-1" }, { "binary_name": "zabbix-frontend-php", "binary_version": "1:5.0.17+dfsg-1" }, { "binary_name": "zabbix-java-gateway", "binary_version": "1:5.0.17+dfsg-1" }, { "binary_name": "zabbix-proxy-mysql", "binary_version": "1:5.0.17+dfsg-1" }, { "binary_name": "zabbix-proxy-pgsql", "binary_version": "1:5.0.17+dfsg-1" }, { "binary_name": "zabbix-proxy-sqlite3", "binary_version": "1:5.0.17+dfsg-1" }, { "binary_name": "zabbix-server-mysql", "binary_version": "1:5.0.17+dfsg-1" }, { "binary_name": "zabbix-server-pgsql", "binary_version": "1:5.0.17+dfsg-1" } ] }
{ "binaries": [ { "binary_name": "zabbix-agent", "binary_version": "1:7.0.10+dfsg-2" }, { "binary_name": "zabbix-agent2", "binary_version": "1:7.0.10+dfsg-2" }, { "binary_name": "zabbix-frontend-php", "binary_version": "1:7.0.10+dfsg-2" }, { "binary_name": "zabbix-java-gateway", "binary_version": "1:7.0.10+dfsg-2" }, { "binary_name": "zabbix-proxy-mysql", "binary_version": "1:7.0.10+dfsg-2" }, { "binary_name": "zabbix-proxy-pgsql", "binary_version": "1:7.0.10+dfsg-2" }, { "binary_name": "zabbix-proxy-sqlite3", "binary_version": "1:7.0.10+dfsg-2" }, { "binary_name": "zabbix-sender", "binary_version": "1:7.0.10+dfsg-2" }, { "binary_name": "zabbix-server-mysql", "binary_version": "1:7.0.10+dfsg-2" }, { "binary_name": "zabbix-server-pgsql", "binary_version": "1:7.0.10+dfsg-2" }, { "binary_name": "zabbix-web-service", "binary_version": "1:7.0.10+dfsg-2" } ] }