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Ability to change environment from query

High
fabpot published GHSA-x8vp-gf4q-mw5j Nov 6, 2024

Package

symfony/runtime (Composer)

Affected versions

<5.4.46
>=6, <6.4.14
>=7, <7.1.7

Patched versions

5.4.46
6.4.14
7.1.7

Description

Description

When the register_argc_argv php directive is set to on , and users call any URL with a special crafted query string, they are able to change the environment or debug mode used by the kernel when handling the request.

Resolution

The SymfonyRuntime now ignores the argv values for non-cli SAPIs PHP runtimes

The patch for this issue is available here for branch 5.4.

Credits

We would like to thank Vladimir Dusheyko for reporting the issue and Wouter de Jong for providing the fix.

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVE ID

CVE-2024-50340

Weaknesses

No CWEs

Credits
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