========================================================================== Ubuntu Security Notice USN-5300-1 February 22, 2022
php7.0 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 ESM Summary: Several security issues were fixed in PHP. Software Description: - php7.0: HTML-embedded scripting language interpreter Details: It was discovered that PHP incorrectly handled certain scripts. An attacker could possibly use this issue to cause a denial of service. (CVE-2015-9253, CVE-2017-8923, CVE-2017-9118, CVE-2017-9120) It was discovered that PHP incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service, or possibly obtain sensitive information. (CVE-2017-9119) It was discovered that PHP incorrectly handled certain scripts with XML parsing functions. An attacker could possibly use this issue to obtain sensitive information. (CVE-2021-21707) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM: php7.0-cgi 7.0.33-0ubuntu0.16.04.16+esm3 php7.0-cli 7.0.33-0ubuntu0.16.04.16+esm3 php7.0-fpm 7.0.33-0ubuntu0.16.04.16+esm3 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5300-1 CVE-2015-9253, CVE-2017-8923, CVE-2017-9118, CVE-2017-9119, CVE-2017-9120, CVE-2021-21707
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