#VU58371 Improper Neutralization of Formula Elements in a CSV File in Serializer - CVE-2021-41270

Vulnerability identifier: #VU58371

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-41270

CWE-ID: CWE-1236

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Serializer
Web applications / Modules and components for CMS

Vendor: Symfony

Description

The vulnerability allows a remote attacker to compromsie the target system.

The vulnerability exists due to improper neutralization of formula elements in a CSV File. A remote authenticated attacker can inject formulas into the tag data.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Serializer: 4.1.0 BETA1 - 5.3.11

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External links
https://github.com/symfony/symfony/commit/3da6f2d45e7536ccb2a26f52fbaf340917e208a8
https://github.com/symfony/symfony/security/advisories/GHSA-2xhg-w2g5-w95x
https://github.com/symfony/symfony/releases/tag/v5.3.12
https://github.com/symfony/symfony/pull/44243

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.