Test ID:	1.3.6.1.4.1.25623.1.1.1.2.2023.3555
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DLA-3555-1)
Summary:	The remote host is missing an update for the Debian 'php7.3' package(s) announced via the DLA-3555-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'php7.3' package(s) announced via the DLA-3555-1 advisory. Vulnerability Insight: Security issues were found in PHP, a widely-used open source general purpose scripting language, which could result in information disclosure, denial of service or potentially remote code execution. CVE-2023-3823 Various XML functions rely on libxml global state to track configuration variables, like whether external entities are loaded. This state is assumed to be unchanged unless the user explicitly changes it by calling appropriate function. Joas Schilling and Baptista Katapi discovered that, since the state is process-global, other modules -- such as ImageMagick -- may also use this library within the same process and change that global state for their internal purposes, and leave it in a state where external entities loading is enabled. This can lead to the situation where external XML is parsed with external entities loaded, which can lead to disclosure of any local files accessible to PHP. This vulnerable state may persist in the same process across many requests, until the process is shut down. CVE-2023-3824 Niels Dossche discovered that when loading a Phar file, while reading PHAR directory entries, insufficient length checking may lead to a stack buffer overflow, leading potentially to memory corruption or RCE. For Debian 10 buster, these problems have been fixed in version 7.3.31-1~ deb10u5. We recommend that you upgrade your php7.3 packages. For the detailed security status of php7.3 please refer to its security tracker page at: [link moved to references] Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references] Affected Software/OS: 'php7.3' package(s) on Debian 10. Solution: Please install the updated package(s). CVSS Score: 10.0 CVSS Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2023-3823 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7NBF77WN6DTVTY2RE73IGPYD6M4PIAWA/ https://github.com/php/php-src/security/advisories/GHSA-3qrf-m4j2-pcrr https://lists.debian.org/debian-lts-announce/2023/09/msg00002.html Common Vulnerability Exposure (CVE) ID: CVE-2023-3824 https://github.com/php/php-src/security/advisories/GHSA-jqcx-ccgc-xwhv
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