CVE-2021-41270: CSV Injection in Symfony
First published: Mon Nov 15 2021(Updated: )
CVE-2021-41270: Prevent CSV Injection via formulas
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/symfony/symfony | >=4.1.0<4.2.0>=4.2.0<4.3.0>=4.3.0<4.4.0>=4.4.0<4.4.35>=5.0.0<5.1.0>=5.1.0<5.2.0>=5.2.0<5.3.0>=5.3.0<5.3.12 | |
| composer/symfony/serializer | >=4.1.0<4.2.0>=4.2.0<4.3.0>=4.3.0<4.4.0>=4.4.0<4.4.35>=5.0.0<5.1.0>=5.1.0<5.2.0>=5.2.0<5.3.0>=5.3.0<5.3.12 | |
| composer/symfony/symfony | >=5.0.0<5.3.12 | 5.3.12 |
| composer/symfony/symfony | >=4.1.0<4.4.35 | 4.4.35 |
| composer/symfony/serializer | >=4.1.0<4.4.35 | 4.4.35 |
| composer/symfony/serializer | >=5.0.0<5.3.12 | 5.3.12 |
| SensioLabs Symfony | >=4.1.0<4.4.35 | |
| SensioLabs Symfony | >=5.0.0<5.3.12 | |
| Fedora | =34 | |
| Fedora | =35 | |
| Fedoraproject Fedora | =34 | |
| Fedoraproject Fedora | =35 |
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Reference Links
- https://symfony.com/cve-2021-41270
- https://github.com/symfony/symfony/commit/3da6f2d45e7536ccb2a26f52fbaf340917e208a8
- https://github.com/symfony/symfony/pull/44243
- https://github.com/symfony/symfony/releases/tag/v5.3.12
- https://github.com/symfony/symfony/security/advisories/GHSA-2xhg-w2g5-w95x
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3BPT4SF6SIXFMZARDWED5T32J7JEH3EP/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QSREFD2TJT5LWKM6S4MD3W26NQQ5WJUP/
- https://nvd.nist.gov/vuln/detail/CVE-2021-41270
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/serializer/CVE-2021-41270.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2021-41270.yaml
- 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/
- https://github.com/advisories/GHSA-2xhg-w2g5-w95x (Advisory)
Frequently Asked Questions
What is the severity of CVE-2021-41270?
CVE-2021-41270 has been classified as a moderate severity vulnerability.
How do I fix CVE-2021-41270?
To fix CVE-2021-41270, update Symfony to version 4.4.35 or 5.3.12 or later.
Which versions of Symfony are affected by CVE-2021-41270?
CVE-2021-41270 affects Symfony versions from 4.1.0 up to 4.4.35 and 5.0.0 up to 5.3.12.
What is CSV Injection as described in CVE-2021-41270?
CSV Injection, also known as Formula Injection, occurs when untrusted input is embedded in CSV files, leading to potential execution of arbitrary formulas.
Who is impacted by CVE-2021-41270?
Anyone using the vulnerable versions of Symfony for applications that generate CSV files could be impacted by CVE-2021-41270.
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