{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-25T22:32:25.029","vulnerabilities":[{"cve":{"id":"CVE-2023-41330","sourceIdentifier":"security-advisories@github.com","published":"2023-09-06T18:15:09.153","lastModified":"2024-11-21T08:21:05.347","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"knplabs/knp-snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page.\n## Issue\n\nOn March 17th the vulnerability CVE-2023-28115 was disclosed, allowing an attacker to gain remote code execution through PHAR deserialization. Version 1.4.2 added a check `if (\\strpos($filename, 'phar://') === 0)` in the `prepareOutput` function to resolve this CVE, however if the user is able to control the second parameter of the `generateFromHtml()` function of Snappy, it will then be passed as the `$filename` parameter in the `prepareOutput()` function. In the original vulnerability, a file name with a `phar://` wrapper could be sent to the `fileExists()` function, equivalent to the `file_exists()` PHP function. This allowed users to trigger a deserialization on arbitrary PHAR files. To fix this issue, the string is now passed to the `strpos()` function and if it starts with `phar://`, an exception is raised. However, PHP wrappers being case insensitive, this patch can be bypassed using `PHAR://` instead of `phar://`. A successful exploitation of this vulnerability allows executing arbitrary code and accessing the underlying filesystem. The attacker must be able to upload a file and the server must be running a PHP version prior to 8. This issue has been addressed in commit `d3b742d61a` which has been included in version 1.4.3. Users are advised to upgrade. Users unable to upgrade should ensure that only trusted users may submit data to the `AbstractGenerator->generate(...)` function.\n"},{"lang":"es","value":"knplabs/knp-snappy es una librería PHP que permite la generación de thumbnail, snapshots o PDFs desde una URL o una página HTML. ## El problema que reveló la vulnerabilidad CVE-2023-28115 el 17 de marzo, permite a un atacante obtener la ejecución remota de código mediante la deserialización PHAR. La versión 1.4.2 agregó una verificación `if (\\strpos($filename, 'phar://') === 0)` en la función `prepareOutput` para resolver este CVE, sin embargo, si el usuario puede controlar el segundo parámetro de la función `generateFromHtml()` de Snappy, luego se pasará como el parámetro `$filename` en la función `prepareOutput()`. En la vulnerabilidad original, un nombre de archivo con un contenedor `phar://` podría enviarse a la función `fileExists()`, equivalente a la función PHP `file_exists()`. Esto permitió a los usuarios activar una deserialización en archivos PHAR arbitrarios. Para solucionar este problema, la cadena ahora se pasa a la función `strpos()` y si comienza con `phar://`, se genera una excepción. Sin embargo, como los contenedores de PHP no distinguen entre mayúsculas y minúsculas, este parche se puede omitir usando `PHAR://` en lugar de `phar://`. Una explotación exitosa de esta vulnerabilidad permite ejecutar código arbitrario y acceder al sistema de archivos subyacente. El atacante debe poder cargar un archivo y el servidor debe ejecutar una versión de PHP anterior a la 8. Este problema se solucionó en el commit `d3b742d61a` que se incluyó en la versión 1.4.3. Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar deben asegurarse de que solo los usuarios confiables puedan enviar datos a la función `AbstractGenerator->generate(...)`."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-502"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:knplabs:snappy:*:*:*:*:*:*:*:*","versionEndExcluding":"1.4.3","matchCriteriaId":"C2412BC7-4738-4E4B-9382-9C967F55BEC0"}]}]}],"references":[{"url":"https://github.com/KnpLabs/snappy/commit/d3b742d61a68bf93866032c2c0a7f1486128b67e","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/KnpLabs/snappy/security/advisories/GHSA-92rv-4j2h-8mjj","source":"security-advisories@github.com","tags":["Exploit","Mitigation","Vendor Advisory"]},{"url":"https://github.com/KnpLabs/snappy/security/advisories/GHSA-gq6w-q6wh-jggc","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/KnpLabs/snappy/commit/d3b742d61a68bf93866032c2c0a7f1486128b67e","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://github.com/KnpLabs/snappy/security/advisories/GHSA-92rv-4j2h-8mjj","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Mitigation","Vendor Advisory"]},{"url":"https://github.com/KnpLabs/snappy/security/advisories/GHSA-gq6w-q6wh-jggc","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Vendor Advisory"]}]}}]}