{"id":"UBUNTU-CVE-2021-21704","details":"In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using Firebird PDO driver extension, a malicious database server could cause crashes in various database functions, such as getAttribute(), execute(), fetch() and others by returning invalid response data that is not parsed correctly by the driver. This can result in crashes, denial of service or potentially memory corruption.","modified":"2026-01-30T01:20:05.932808Z","published":"2021-07-02T00:00:00Z","related":["USN-5006-1","USN-5006-2"],"upstream":["CVE-2021-21704"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-21704"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5006-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5006-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-21704"}],"affected":[{"package":{"name":"php5","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/php5@5.5.9+dfsg-1ubuntu4.29+esm14?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.5.9+dfsg-1ubuntu4.29+esm14"}]}],"versions":["5.5.3+dfsg-1ubuntu2","5.5.3+dfsg-1ubuntu3","5.5.6+dfsg-1ubuntu1","5.5.6+dfsg-1ubuntu2","5.5.8+dfsg-2ubuntu1","5.5.9+dfsg-1ubuntu1","5.5.9+dfsg-1ubuntu2","5.5.9+dfsg-1ubuntu3","5.5.9+dfsg-1ubuntu4","5.5.9+dfsg-1ubuntu4.1","5.5.9+dfsg-1ubuntu4.2","5.5.9+dfsg-1ubuntu4.3","5.5.9+dfsg-1ubuntu4.4","5.5.9+dfsg-1ubuntu4.5","5.5.9+dfsg-1ubuntu4.6","5.5.9+dfsg-1ubuntu4.7","5.5.9+dfsg-1ubuntu4.9","5.5.9+dfsg-1ubuntu4.11","5.5.9+dfsg-1ubuntu4.12","5.5.9+dfsg-1ubuntu4.13","5.5.9+dfsg-1ubuntu4.14","5.5.9+dfsg-1ubuntu4.16","5.5.9+dfsg-1ubuntu4.17","5.5.9+dfsg-1ubuntu4.19","5.5.9+dfsg-1ubuntu4.20","5.5.9+dfsg-1ubuntu4.21","5.5.9+dfsg-1ubuntu4.22","5.5.9+dfsg-1ubuntu4.23","5.5.9+dfsg-1ubuntu4.24","5.5.9+dfsg-1ubuntu4.25","5.5.9+dfsg-1ubuntu4.26","5.5.9+dfsg-1ubuntu4.27","5.5.9+dfsg-1ubuntu4.29","5.5.9+dfsg-1ubuntu4.29+esm1","5.5.9+dfsg-1ubuntu4.29+esm2","5.5.9+dfsg-1ubuntu4.29+esm3","5.5.9+dfsg-1ubuntu4.29+esm4","5.5.9+dfsg-1ubuntu4.29+esm5","5.5.9+dfsg-1ubuntu4.29+esm6","5.5.9+dfsg-1ubuntu4.29+esm8","5.5.9+dfsg-1ubuntu4.29+esm10","5.5.9+dfsg-1ubuntu4.29+esm11","5.5.9+dfsg-1ubuntu4.29+esm12","5.5.9+dfsg-1ubuntu4.29+esm13"],"ecosystem_specific":{"binaries":[{"binary_name":"libapache2-mod-php5","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"libapache2-mod-php5filter","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"libphp5-embed","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php-pear","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-cgi","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-cli","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-common","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-curl","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-dev","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-enchant","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-fpm","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-gd","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-gmp","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-intl","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-ldap","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-mysql","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-mysqlnd","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-odbc","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-pgsql","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-pspell","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-readline","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-recode","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-snmp","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-sqlite","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-sybase","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-tidy","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-xmlrpc","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"},{"binary_name":"php5-xsl","binary_version":"5.5.9+dfsg-1ubuntu4.29+esm14"}],"availability":"Available 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