CVE-2025-34337 漏洞深度分析

漏洞概述

CVE 编号: CVE-2025-34337
CVSS 评分: 8.7(HIGH)
CVSS 向量: CVSS:4.0/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
CWE 分类: CWE-345
漏洞状态: Deferred
发布时间: 2025-11-19T17:15:49.257
最后更新: 2026-07-14T23:17:25.997

漏洞描述

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."

影响分析

此漏洞的具体影响取决于实际利用场景。"

修复建议

  1. 及时关注厂商发布的安全更新和补丁
  2. 升级受影响组件到最新版本
  3. 如无法立即升级,参考厂商提供的临时缓解措施
  4. 加强网络访问控制和监控

参考链接

  1. https://github.com/eGovFramework/egovframe-common-components
  2. https://pierrekim.github.io/advisories/2025-egovframe.txt
  3. https://pierrekim.github.io/blog/2025-11-20-egovframe-2-vulnerabilities.html
  4. https://www.egovframe.go.kr/eng/sub.do?menuNo=2
  5. https://www.vulncheck.com/advisories/egovframework-unauthenticated-encryption-oracle-via-web-editor-image-upload-endpoints