CVE-2023-43291
Published: 27 September 2023
Summary
CVE-2023-43291 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Emlog Emlog. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 4.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-43291 is a deserialization of untrusted data vulnerability, tracked as CWE-502, that affects emlog pro version 2.1.15 and earlier. The issue is located in the cache.php component and is rated 9.8 under CVSS 3.1, reflecting network-accessible attack conditions with no required privileges or user interaction.
A remote attacker can supply a crafted serialized payload to the affected component and achieve arbitrary code execution on the target system. The published EPSS score has remained flat at 0.1762 with no material increase since disclosure.
Public references consist of technical gist entries that demonstrate the flaw but contain no vendor advisory, patch details, or mitigation guidance.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-47710
Vulnerability details
Deserialization of Untrusted Data in emlog pro v.2.1.15 and earlier allows a remote attacker to execute arbitrary code via the cache.php component.
- 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.