🛡️ CVE-2017-16790 — form

⚪ Unknown ✅ No Known Exploit CWE-20 OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Symfony SSRF Vulnerability via Form Component

An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. When a form is submitted by the user, the request handler classes of the Form component merge POST data and uploaded files data into one array. This big array forms the data that are then bound to the form. At this stage there is no difference anymore between submitted POST data and uploaded files. A user can send a crafted HTTP request where the value of a "FileType" is sent as normal POST data that could be interpreted as a local file path on the server-side (for example, "file:///etc/passwd"). If the application did not perform any additional checks about the value submitted to the "FileType", the contents of the given file on the server could have been exposed to the attacker.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Weakness class

CVE-2017-16790 is classified as CWE-20: Improper Input Validation. The application accepts input without checking that it has the expected form, so malformed values reach code that assumes they are well formed.

Affected software

CVE-2017-16790 is recorded against 2 packages.

  • symfony/form (from 3.3.0 up to 3.3.13)
  • symfony/symfony (from 3.3.0 up to 3.3.13)

Timeline and source

Published on 14 May 2022 and last revised on 25 April 2024. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)
symfony.com (Web)
symfony.com (Web)
www.debian.org (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE CWE-20
Public Exploit ✅ No
Source OSV
Published 2022-05-14
Updated 2026-08-12
Modified 2024-04-25
Fix URL N/A

Affected Packages

Software From version Fixed in
symfony/form 3.3.0 3.3.13
symfony/symfony 3.3.0 3.3.13

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