Symfony up to 4.4.33/5.3.11 Serializer csv injection

Summaryinfo

A vulnerability classified as critical has been found in Symfony up to 4.4.33/5.3.11. The impacted element is an unknown function of the component Serializer. This manipulation causes csv injection. The identification of this vulnerability is CVE-2021-41270. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Symfony up to 4.4.33/5.3.11 and classified as critical. Affected by this vulnerability is some unknown processing of the component Serializer. The manipulation with an unknown input leads to a csv injection vulnerability. The CWE definition for the vulnerability is CWE-1236. The product saves user-provided information into a Comma-Separated Value (CSV) file, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as a command when the file is opened by a spreadsheet product. As an impact it is known to affect confidentiality.

The weakness was shared 11/25/2021 as GHSA-2xhg-w2g5-w95x. The advisory is shared at github.com. This vulnerability is known as CVE-2021-41270 since 09/15/2021. Neither technical details nor an exploit are publicly available.

Upgrading to version 4.4.34 or 5.3.12 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 3da6f2d45e7536ccb2a26f52fbaf340917e208a8 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Symfony

Version

• 4.4.0
• 4.4.1
• 4.4.2
• 4.4.3
• 4.4.4
• 4.4.5
• 4.4.6
• 4.4.7
• 4.4.8
• 4.4.9
• 4.4.10
• 4.4.11
• 4.4.12
• 4.4.13
• 4.4.14
• 4.4.15
• 4.4.16
• 4.4.17
• 4.4.18
• 4.4.19
• 4.4.20
• 4.4.21
• 4.4.22
• 4.4.23
• 4.4.24
• 4.4.25
• 4.4.26
• 4.4.27
• 4.4.28
• 4.4.29
• 4.4.30
• 4.4.31
• 4.4.32
• 4.4.33
• 5.3.0
• 5.3.1
• 5.3.2
• 5.3.3
• 5.3.4
• 5.3.5
• 5.3.6
• 5.3.7
• 5.3.8
• 5.3.9
• 5.3.10
• 5.3.11

License

• open-source

Website

• Product: https://github.com/symfony/symfony/

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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