{"id":"CVE-2023-34448","state":"PUBLISHED","title":"Grav Server-side Template Injection (SSTI) via Twig Default Filters","description":"Grav is a flat-file content management system. Prior to version 1.7.42, the patch for CVE-2022-2073, a server-side template injection vulnerability in Grav leveraging the default `filter()` function, did not block other built-in functions exposed by Twig's Core Extension that could be used to invoke arbitrary unsafe functions, thereby allowing for remote code execution. A patch in version 1.74.2 overrides the built-in Twig `map()` and `reduce()` filter functions in `system/src/Grav/Common/Twig/Extension/GravExtension.php` to validate the argument passed to the filter in `$arrow`.","publishedAt":"2023-06-14T22:06:01.338Z","updatedAt":"2024-12-18T21:38:44.207Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["getgrav grav"],"affected":[{"vendor":"getgrav","product":"grav","versions":[{"version":"< 1.7.42","status":"affected"}]}],"references":["https://github.com/getgrav/grav/security/advisories/GHSA-whr7-m3f8-mpm8","https://github.com/getgrav/grav/commit/8c2c1cb72611a399f13423fc6d0e1d998c03e5c8","https://github.com/twigphp/Twig/blob/v1.44.7/src/Environment.php#L148","https://huntr.dev/bounties/3ef640e6-9e25-4ecb-8ec1-64311d63fe66/","https://www.github.com/getgrav/grav/commit/9d6a2dba09fd4e56f5cdfb9a399caea355bfeb83"],"weaknesses":["CWE-20","CWE-1336"],"ingestedAt":"2026-10-29T20:06:00.499Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/34xxx/CVE-2023-34448.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-34448","state":"PUBLISHED","datePublished":"2023-06-14T22:06:01.338Z","dateUpdated":"2024-12-18T21:38:44.207Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2023-06-06T16:16:53.558Z"},"containers":{"cna":{"title":"Grav Server-side Template Injection (SSTI) via Twig Default Filters","descriptions":[{"lang":"en","value":"Grav is a flat-file content management system. Prior to version 1.7.42, the patch for CVE-2022-2073, a server-side template injection vulnerability in Grav leveraging the default `filter()` function, did not block other built-in functions exposed by Twig's Core Extension that could be used to invoke arbitrary unsafe functions, thereby allowing for remote code execution. A patch in version 1.74.2 overrides the built-in Twig `map()` and `reduce()` filter functions in `system/src/Grav/Common/Twig/Extension/GravExtension.php` to validate the argument passed to the filter in `$arrow`."}],"affected":[{"vendor":"getgrav","product":"grav","versions":[{"version":"< 1.7.42","status":"affected"}]}],"references":[{"url":"https://github.com/getgrav/grav/security/advisories/GHSA-whr7-m3f8-mpm8","name":"https://github.com/getgrav/grav/security/advisories/GHSA-whr7-m3f8-mpm8","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/getgrav/grav/commit/8c2c1cb72611a399f13423fc6d0e1d998c03e5c8","name":"https://github.com/getgrav/grav/commit/8c2c1cb72611a399f13423fc6d0e1d998c03e5c8","tags":["x_refsource_MISC"]},{"url":"https://github.com/twigphp/Twig/blob/v1.44.7/src/Environment.php#L148","name":"https://github.com/twigphp/Twig/blob/v1.44.7/src/Environment.php#L148","tags":["x_refsource_MISC"]},{"url":"https://huntr.dev/bounties/3ef640e6-9e25-4ecb-8ec1-64311d63fe66/","name":"https://huntr.dev/bounties/3ef640e6-9e25-4ecb-8ec1-64311d63fe66/","tags":["x_refsource_MISC"]},{"url":"https://www.github.com/getgrav/grav/commit/9d6a2dba09fd4e56f5cdfb9a399caea355bfeb83","name":"https://www.github.com/getgrav/grav/commit/9d6a2dba09fd4e56f5cdfb9a399caea355bfeb83","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"CWE-20: Improper Input Validation","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-1336","lang":"en","description":"CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2023-06-14T22:16:40.551Z"},"source":{"advisory":"GHSA-whr7-m3f8-mpm8","discovery":"UNKNOWN"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/getgrav/grav/security/advisories/GHSA-whr7-m3f8-mpm8","name":"https://github.com/getgrav/grav/security/advisories/GHSA-whr7-m3f8-mpm8","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://github.com/getgrav/grav/commit/8c2c1cb72611a399f13423fc6d0e1d998c03e5c8","name":"https://github.com/getgrav/grav/commit/8c2c1cb72611a399f13423fc6d0e1d998c03e5c8","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://github.com/twigphp/Twig/blob/v1.44.7/src/Environment.php#L148","name":"https://github.com/twigphp/Twig/blob/v1.44.7/src/Environment.php#L148","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://huntr.dev/bounties/3ef640e6-9e25-4ecb-8ec1-64311d63fe66/","name":"https://huntr.dev/bounties/3ef640e6-9e25-4ecb-8ec1-64311d63fe66/","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://www.github.com/getgrav/grav/commit/9d6a2dba09fd4e56f5cdfb9a399caea355bfeb83","name":"https://www.github.com/getgrav/grav/commit/9d6a2dba09fd4e56f5cdfb9a399caea355bfeb83","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T16:10:06.973Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-12-18T21:38:33.590208Z","id":"CVE-2023-34448","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-12-18T21:38:44.207Z"}}]}}}