CVE-2023-36299
Published: 03 August 2023
Summary
CVE-2023-36299 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Typecho Typecho. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 6.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
Typecho version 1.2.1 contains a file upload vulnerability that permits remote code execution. The flaw is triggered through the upload and options-general parameters in index.php and is tracked under CWE-434 for unrestricted upload of files with dangerous types. The issue received a CVSS 3.1 score of 8.8, reflecting network attack vector, low complexity, and low-privileged access requirements.
An authenticated attacker with low privileges can upload a crafted file via the affected parameters and subsequently execute arbitrary code on the server, achieving full confidentiality, integrity, and availability impact.
Public proof-of-concept code has been published on GitHub, and the EPSS score has remained steady at 0.1190 with no material increase after disclosure. The referenced Typecho release page corresponds to the vulnerable version without indicating an available patch.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-40269
Vulnerability details
A File Upload vulnerability in typecho v.1.2.1 allows a remote attacker to execute arbitrary code via the upload and options-general parameters in index.php.
- 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.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.