- Description
- File Upload vulnerability in ChestnutCMS through 1.5.0. Based on the code analysis, it was determined that the /api/member/avatar API endpoint receives a base64 string as input. This string is then passed to the memberService.uploadAvatarByBase64 method for processing. Within the service, the base64-encoded image is parsed. For example, given a string like: data:image/html;base64,PGh0bWw+PGltZyBzcmM9eCBvbmVycm9yPWFsZXJ0KDEpPjwvaHRtbD4= the content after the comma is extracted and decoded using Base64.getDecoder().decode(). The substring from the 11th character up to the first occurrence of a semicolon (;) is assigned to the suffix variable (representing the file extension). The decoded content is then written to a file. However, the file extension is not validated, and since this functionality is exposed to the frontend, it poses significant security risks.
- Source
- cve@mitre.org
- NVD status
- Awaiting Analysis
CVSS 3.1
- Type
- Secondary
- Base score
- 9.8
- Impact score
- 5.9
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- CRITICAL
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
- CWE-434
- Hype score
- Not currently trending
CVE-2024-56828 Unvalidated File Upload Risk in ChestnutCMS via Avatar API ChestnutCMS up to 1.5.0 has a File Upload vulnerability. The /api/member/avatar endpoint accepts a base64 string. It goes to the memberSer... https://t.co/iUwt8PqDDD
@VulmonFeeds
6 Jan 2025
35 Impressions
0 Retweets
1 Like
0 Bookmarks
0 Replies
0 Quotes
CVE-2024-56828 File Upload vulnerability in ChestnutCMS through 1.5.0. Based on the code analysis, it was determined that the /api/member/avatar API endpoint receives a base64 strin… https://t.co/JV1ZvZWAH4
@CVEnew
6 Jan 2025
345 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes