Symfony/Serializer handles serializing and deserializing data structures for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Symfony versions 4.1.0 before 4.4.35 and versions 5.0.0 before 5.3.12 are vulnerable to CSV injection, also known as formula injection. In Symfony 4.1, maintainers added the opt-in `csv_escape_formulas` option in the `CsvEncoder`, to prefix all cells starting with `=`, `+`, `-` or `@` with a tab `\t`. Since then, OWASP added 2 chars in that list: Tab (0x09) and Carriage return (0x0D). This makes the previous prefix char (Tab `\t`) part of the vulnerable characters, and OWASP suggests using the single quote `'` for prefixing the value. Starting with versions 4.4.34 and 5.3.12, Symfony now follows the OWASP recommendations and uses the single quote `'` to prefix formulas and add the prefix to cells starting by `\t`, `\r` as well as `=`, `+`, `-` and `@`.
References
Link | Resource |
---|---|
https://github.com/symfony/symfony/commit/3da6f2d45e7536ccb2a26f52fbaf340917e208a8 | Patch Third Party Advisory |
https://github.com/symfony/symfony/pull/44243 | Patch Third Party Advisory |
https://github.com/symfony/symfony/releases/tag/v5.3.12 | Release Notes Third Party Advisory |
https://github.com/symfony/symfony/security/advisories/GHSA-2xhg-w2g5-w95x | Patch Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3BPT4SF6SIXFMZARDWED5T32J7JEH3EP/ | |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QSREFD2TJT5LWKM6S4MD3W26NQQ5WJUP/ |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: GitHub_M
Published: 2021-11-24T19:05:11
Updated: 2021-12-03T02:06:25
Reserved: 2021-09-15T00:00:00
Link: CVE-2021-41270
JSON object: View
NVD Information
Status : Modified
Published: 2021-11-24T19:15:07.887
Modified: 2023-11-07T03:38:54.473
Link: CVE-2021-41270
JSON object: View
Redhat Information
No data.
CWE