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Ubuntu 22.04 LTS: USN-6277-2 Critical: Dompdf Code Execution Threats

Several security issues were fixed in Dompdf.. ========================================================================== Ubuntu Security Notice USN-6277-2 August 10, 2023 php-dompdf vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS Summary: Several security issues were fixed in Dompdf. Software Description: - php-dompdf: HTML to PDF converter Details: USN-6277-1 fixed vulnerabilities in Dompdf. This update provides the corresponding updates for Ubuntu 22.04 LTS. Original advisory details: It was discovered that Dompdf was not properly validating untrusted input when processing HTML content under certain circumstances. An attacker could possibly use this issue to expose sensitive information or execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2014-5011, CVE-2014-5012, CVE-2014-5013) It was discovered that Dompdf was not properly validating processed HTML content that referenced PHAR files, which could result in the deserialization of untrusted data. An attacker could possibly use this issue to execute arbitrary code. (CVE-2021-3838) It was discovered that Dompdf was not properly validating processed HTML content that referenced both a remote base and a local file, which could result in the bypass of a chroot check. An attacker could possibly use this issue to expose sensitive information. (CVE-2022-2400) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: php-dompdf 0.6.2+dfsg-3.1ubuntu0.1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-6277-2 https://ubuntu.com/security/notices/USN-6277-1 CVE-2021-3838, CVE-2022-2400 PackageInformation: https://launchpad.net/ubuntu/+source/php-dompdf/0.6.2+dfsg-3.1ubuntu0.1 . Recent updates for Dompdf in Ubuntu 22.04 LTS resolve risks linked to potential code execution and data leakage.. Dompdf Security Update, Ubuntu Security Notice, PDF Converter Risks. . Severity: Critical. LinuxSecurity.com Team

Aug 10, 2023 •Critical Ubuntu