CVE-2023-49442
Published: 03 January 2024
Summary
CVE-2023-49442 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Jeecg Jeecg. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 1.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2023-49442 is a deserialization of untrusted data vulnerability (CWE-502) affecting the jeecgFormDemoController component in JEECG 4.0 and earlier versions. The flaw permits remote code execution when the application processes a specially crafted serialized object submitted in a POST request, carrying a CVSS 3.1 base score of 9.8.
Unauthenticated attackers with network access can exploit the issue by sending a malicious POST request to the affected controller endpoint. Successful exploitation grants the attacker the ability to execute arbitrary code on the server, resulting in full confidentiality, integrity, and availability impact.
Public technical write-ups, including the referenced analysis at lemono.fun, describe the request construction and gadget chains used to trigger the deserialization. The CVE carries an EPSS score of 0.5552, indicating substantial observed exploitation interest.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-53406
Vulnerability details
Deserialization of Untrusted Data in jeecgFormDemoController in JEECG 4.0 and earlier allows attackers to run arbitrary code via crafted POST request.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing supplies malicious serialized objects, detecting unsafe deserialization and supporting corrective actions.
Evaluation of untrusted data handling (deserialization testing) reveals unsafe processing, which the required remediation process addresses.
Untrusted serialized data can be deserialized and observed inside the chamber, blocking gadget-chain exploitation outside the sandbox.
Validates or rejects untrusted serialized data before deserialization occurs.
Identifies and blocks malicious code introduced through deserialization of untrusted data at system boundaries.
Integrity verification of serialized information can detect tampering before deserialization occurs.
Provenance of associated data allows detection of untrusted sources before deserialization or processing occurs.