CSV Injection in Symfony Serializer



Published: 2021-11-25
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-41270
CWE-ID CWE-1236
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Serializer
Web applications / Modules and components for CMS

Vendor Symfony

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Neutralization of Formula Elements in a CSV File

EUVDB-ID: #VU58371

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41270

CWE-ID: CWE-1236 - Improper Neutralization of Formula Elements in a CSV File

Exploit availability: No

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 - 5.3.11


CPE2.3 External links

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

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.



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