Remote code execution via permissive method invocation
Published Jun 22, 2023 · Updated Dec 6, 2024
Code injection in System.Linq.Dynamic.Core 1.0.7.10 through 1.2.25 allows remote attackers to execute arbitrary code via dynamic queries. The expression parser permits public methods whose return type is allow-listed, so reflective MethodInfo.Invoke calls bypass the intended type restriction and reach arbitrary methods. Exploitation requires an application to pass attacker-controlled text to a dynamic method such as Where, Select, or OrderBy; commands run with the application's process privileges.
Summary
What happened
Code injection in System.Linq.Dynamic.Core 1.0.7.10 through 1.2.25 allows remote attackers to execute arbitrary code via dynamic queries. The expression parser permits public methods whose return type is allow-listed, so reflective MethodInfo.Invoke calls bypass the intended type restriction and reach arbitrary methods. Exploitation requires an application to pass attacker-controlled text to a dynamic method such as Where, Select, or OrderBy; commands run with the application's process privileges.
The record
- CVE
- CVE-2023-32571
- Published
- Jun 22, 2023
- Updated
- Dec 6, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-697, CWE-184, T1059
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 22, 2023CVE publishedPublication date reported by the CVE source.
- Dec 6, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- NCC Group Dynamic LINQ method-invocation proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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