CVE-2025-34337
eGovFramework <= 4.3.1 Unauthenticated Encryption Oracle via Web Editor Image Upload Endpoints
Description
eGovFramework/egovframe-common-components versions up to and including 4.3.1 includes Web Editor image upload and related file delivery functionality that uses symmetric encryption to protect URL parameters, but exposes an encryption oracle that allows attackers to generate valid ciphertext for chosen values. The image upload endpoints /utl/wed/insertImage.do and /utl/wed/insertImageCk.do encrypt server-side paths, filenames, and MIME types and embed them directly into a download URL that is returned to the client. Because these same encrypted parameters are trusted by other endpoints, such as /utl/web/imageSrc.do and /cmm/fms/getImage.do, an unauthenticated attacker can abuse the upload functionality to obtain encrypted representations of attacker-chosen identifiers and then replay those ciphertext values to file-serving APIs. This design failure allows an attacker to bypass access controls that rely solely on the secrecy of encrypted parameters and retrieve arbitrary stored files that are otherwise expected to require an existing session or specific authorization context. KISA/KrCERT has identified this unpatched vulnerability as "KVE-2023-5281."
INFO
Published Date :
Nov. 19, 2025, 5:15 p.m.
Last Modified :
Oct. 19, 2026, 1:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update to a version beyond 4.3.1.
- Apply vendor-provided security patches.
- Validate access controls for file retrieval.
- Remove direct parameter encryption for file serving.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-34337.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-34337 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-34337
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-34337 vulnerability anywhere in the article.
-
seclists.org
2 vulnerabilities in Egovframe
Full Disclosure mailing list archives From: Pierre Kim <pierre.kim.sec () gmail com> Date: Thu, 20 Nov 2025 07:02:15 -0500 Hello, Please find a text-only version below sent to security mailing lists. ... Read more
The following table lists the changes that have been made to the
CVE-2025-34337 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 19, 2026
Action Type Old Value New Value Added Translation Title: eGovFramework/egovframe-common-components, Description: eGovFramework/egovframe-common-components versiones hasta e incluyendo 4.3.1 incluye la funcionalidad de carga de imágenes del Editor Web y entrega de archivos relacionada que utiliza cifrado simétrico para proteger los parámetros de URL, pero expone un oráculo de cifrado que permite a los atacantes generar texto cifrado válido para valores elegidos. Los endpoints de carga de imágenes /utl/wed/insertImage.do y /utl/wed/insertImageCk.do cifran rutas del lado del servidor, nombres de archivo y tipos MIME y los incrustan directamente en una URL de descarga que se devuelve al cliente. Debido a que estos mismos parámetros cifrados son confiados por otros endpoints, como /utl/web/imageSrc.do y /cmm/fms/getImage.do, un atacante no autenticado puede abusar de la funcionalidad de carga para obtener representaciones cifradas de identificadores elegidos por el atacante y luego reproducir esos valores de texto cifrado en las API de servicio de archivos. Este fallo de diseño permite a un atacante eludir los controles de acceso que dependen únicamente del secreto de los parámetros cifrados y recuperar archivos almacenados arbitrarios que, de otro modo, se esperaría que requirieran una sesión existente o un contexto de autorización específico. KISA/KrCERT ha identificado esta vulnerabilidad sin parchear como “KVE-2023-5281”. -
CVE Modified by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://github.com/eGovFramework/egovframe-common-components', 'vendor': 'eGovFramework/egovframe-common-components', 'product': 'eGovFramework/egovframe-common-components', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '4.3.1'}], 'defaultStatus': 'unknown'}] [{'repo': 'https://github.com/eGovFramework/egovframe-common-components', 'vendor': 'eGovFramework/egovframe-common-components', 'product': 'eGovFramework/egovframe-common-components', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '4.3.1'}], 'packageURL': 'pkg:github/eGovFramework/egovframe-common-components', 'defaultStatus': 'unknown'}] -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/eGovFramework/egovframe-common-components', 'vendor': 'eGovFramework/egovframe-common-components', 'product': 'eGovFramework/egovframe-common-components', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '4.3.1'}], 'defaultStatus': 'unknown'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2025-34337', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2025-11-19T16:41:23.612236Z'} -
New CVE Received by [email protected]
Nov. 19, 2025
Action Type Old Value New Value Added Description eGovFramework/egovframe-common-components versions up to and including 4.3.1 includes Web Editor image upload and related file delivery functionality that uses symmetric encryption to protect URL parameters, but exposes an encryption oracle that allows attackers to generate valid ciphertext for chosen values. The image upload endpoints /utl/wed/insertImage.do and /utl/wed/insertImageCk.do encrypt server-side paths, filenames, and MIME types and embed them directly into a download URL that is returned to the client. Because these same encrypted parameters are trusted by other endpoints, such as /utl/web/imageSrc.do and /cmm/fms/getImage.do, an unauthenticated attacker can abuse the upload functionality to obtain encrypted representations of attacker-chosen identifiers and then replay those ciphertext values to file-serving APIs. This design failure allows an attacker to bypass access controls that rely solely on the secrecy of encrypted parameters and retrieve arbitrary stored files that are otherwise expected to require an existing session or specific authorization context. KISA/KrCERT has identified this unpatched vulnerability as "KVE-2023-5281." Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-345 Added Reference https://github.com/eGovFramework/egovframe-common-components Added Reference https://pierrekim.github.io/advisories/2025-egovframe.txt Added Reference https://pierrekim.github.io/blog/2025-11-20-egovframe-2-vulnerabilities.html Added Reference https://www.egovframe.go.kr/eng/sub.do?menuNo=2 Added Reference https://www.vulncheck.com/advisories/egovframework-unauthenticated-encryption-oracle-via-web-editor-image-upload-endpoints