Prevent injection of invalid entity ids for "autocomplete" fields

CVE-2023-41336 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

Under certain circumstances, an attacker could successfully submit an entity id for an EntityType that is not part of the valid choices.

Affected applications are any that use:

  • A custom query_builder option to limit the valid results;
    AND
  • An EntityType with 'autocomplete' => true or a custom AsEntityAutocompleteField.

Under this circumstance, if an id is submitted, it is accepted even if the matching record would not be returned by the custom query built with query_builder.

Patches

The problem has been fixed in symfony/ux-autocomplete version 2.11.2.

Workarounds

Upgrade to version 2.11.2 or greater of symfony/ux-autocomplete or perform extra validation after submit to verify the selected option is valid.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2023-09-11 14:43:05 UTC
Updated
2023-11-10 05:04:38 UTC
GitHub reviewed
2023-09-11 14:43:05 UTC
NVD published
2023-09-11

EPSS Score

Score Percentile
1.30% 79.70%

CVSS Scores

Base score Version Severity Vector
6.5 3.1 —
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
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-4cpv-669c-r79x ↗
CVE CVE-2023-41336 ↗

CWEs

CWE id Name
CWE-20 Improper Input Validation

Credits

  • janklan (reporter)

Affected packages (1)

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

Ecosystem Package Vulnerable range First patched Vulnerable functions
composer symfony/ux-autocomplete < 2.11.2 2.11.2 —

References

cvelogic Threat Intelligence