Vulnerability Details : CVE-2019-18873
Potential exploit
FUDForum 3.0.9 is vulnerable to Stored XSS via the User-Agent HTTP header. This may result in remote code execution. An attacker can use a user account to fully compromise the system via a GET request. When the admin visits user information under "User Manager" in the control panel, the payload will execute. This will allow for PHP files to be written to the web root, and for code to execute on the remote server. The problem is in admsession.php and admuser.php.
Vulnerability category: Cross site scripting (XSS)Execute code
Products affected by CVE-2019-18873
- cpe:2.3:a:fudforum:fudforum:3.0.9:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-18873
3.42%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 87 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-18873
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.5
|
HIGH | AV:N/AC:M/Au:S/C:C/I:C/A:C |
6.8
|
10.0
|
NIST | |
|
9.0
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
2.3
|
6.0
|
NIST |
CWE ids for CVE-2019-18873
-
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.Assigned by: nvd@nist.gov (Primary)
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-18873
-
https://sourceforge.net/p/fudforum/code/6321/
FUDforum / Code / Commit [r6321]Third Party Advisory
-
https://github.com/fuzzlove/FUDforum-XSS-RCE
GitHub - fuzzlove/FUDforum-XSS-RCE: FUDForum 3.0.9 - XSS / Remote Code Execution (CVE-2019-18873, CVE-2019-18839)Exploit;Third Party Advisory
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