Ability to expose data in Sylius by using an unintended serialisation group

CVE-2020-5220 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

ResourceBundle accepts and uses any serialisation groups to be passed via a HTTP header. This might lead to data exposure by using an unintended serialisation group - for example it could make Shop API use a more permissive group from Admin API.

Anyone exposing an API with ResourceBundle's controller is affected. The vulnerable versions are: <1.3 || >=1.3.0 <=1.3.12 || >=1.4.0 <=1.4.5 || >=1.5.0 <=1.5.0 || >=1.6.0 <=1.6.2.

Patches

The patch is provided for ResourceBundle 1.3.13, 1.4.6, 1.5.1 and 1.6.3, but not for any versions below 1.3.

After it is applied, It allows to choose only the groups that are defined in serialization_groups or allowed_serialization_groups route definition. Any group not defined in those will not be used.

This behaviour might be a BC break for those using custom groups via the HTTP header, please adjust allowed_serialization_groups accordingly.

Workarounds

Service sylius.resource_controller.request_configuration_factory can be overridden with an implementation copied from \Sylius\Bundle\ResourceBundle\Controller\RequestConfigurationFactory where the part that handles custom serialisation groups is deleted.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Not specified
Published (advisory)
2020-01-31 18:00:43 UTC
Updated
2024-02-07 18:42:56 UTC
GitHub reviewed
2020-01-27 20:11:32 UTC
NVD published
2020-01-27

EPSS Score

Score Percentile
0.32% 54.85%

CVSS Scores

Base score Version Severity Vector
4.4 3.1 —
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-8vp7-j5cj-vvm2 ↗
CVE CVE-2020-5220 ↗

CWEs

CWE id Name
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Affected packages (6)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
composer sylius/resource-bundle >= 1.4.0, < 1.4.6 1.4.6 —
composer sylius/resource-bundle >= 1.5.0, < 1.5.1 1.5.1 —
composer sylius/resource-bundle >= 1.6.0, < 1.6.3 1.6.3 —
composer sylius/sylius < 1.3.12 1.3.12 —
composer sylius/sylius >= 1.4.0, < 1.4.4 1.4.4 —
composer sylius/resource-bundle >= 1.0.0, < 1.3.13 1.3.13 —

References

cvelogic Threat Intelligence