CVE-2022-39261
It is possible to use the `source` or `include` statement to read arbitrary files from outside the templates' directory when using a namespace like `@somewhere/../some.file`.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.56%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Twig is a template language for PHP. Versions 1.x prior to 1.44.7, 2.x prior to 2.15.3, and 3.x prior to 3.4.3 encounter an issue when the filesystem loader loads templates for which the name is a user input. It is possible to use the `source` or `include` statement to read arbitrary files from outside the templates' directory when using a namespace like `@somewhere/../some.file`. In such a case, validation is bypassed. Versions 1.44.7, 2.15.3, and 3.4.3 contain a fix for validation of such template names. There are no known workarounds aside from upgrading.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.56% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- symfony/twig · drupal/drupal · fedoraproject/fedora · debian/debian linux
- Source
- security-advisories@github.com
References
- https://github.com/twigphp/Twig/commit/35f3035c5deb0041da7b84daf02dea074ddc7a0bPatch, Third Party Advisory
- https://github.com/twigphp/Twig/security/advisories/GHSA-52m2-vc4m-jj33Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00016.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OKRUHPVLIQVFPPJ2UWC3WV3WQO763NR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUVTXMNPSZAHS3DWZEM56V5W4NPVR6L7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NWRFPZSR74SYVJKBTKTMYUK36IJ3SQJP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TW53TFJ6WWNXMUHOFACKATJTS7NIHVQE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WV5TNNJLGG536TJH6DLCIAAZZIPV2GUD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YU4ZYX62H2NUAKKGUES4RZIM4KMTKZ7F/
- https://www.debian.org/security/2022/dsa-5248Third Party Advisory
- https://www.drupal.org/sa-core-2022-016Patch, Third Party Advisory
- https://github.com/twigphp/Twig/commit/35f3035c5deb0041da7b84daf02dea074ddc7a0bPatch, Third Party Advisory
- https://github.com/twigphp/Twig/security/advisories/GHSA-52m2-vc4m-jj33Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00016.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OKRUHPVLIQVFPPJ2UWC3WV3WQO763NR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUVTXMNPSZAHS3DWZEM56V5W4NPVR6L7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NWRFPZSR74SYVJKBTKTMYUK36IJ3SQJP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TW53TFJ6WWNXMUHOFACKATJTS7NIHVQE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WV5TNNJLGG536TJH6DLCIAAZZIPV2GUD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YU4ZYX62H2NUAKKGUES4RZIM4KMTKZ7F/
- https://www.debian.org/security/2022/dsa-5248Third Party Advisory
- https://www.drupal.org/sa-core-2022-016Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.