Vulnerability Details : CVE-2021-39249
Invision Community (aka IPS Community Suite or IP-Board) before 4.6.5.1 allows reflected XSS because the filenames of uploaded files become predictable through a brute-force attack against the PHP mt_rand function.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2021-39249
- cpe:2.3:a:invisioncommunity:invision_power_board:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-39249
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 44 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-39249
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2021-39249
-
The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-39249
-
https://invisioncommunity.com/release-notes/4651-r102/
4.6.5.1 - Release Notes - Invision CommunityRelease Notes;Vendor Advisory
-
https://ssd-disclosure.com/ssd-advisory-ip-board-stored-xss-to-rce-chain/
SSD Advisory – IP-Board Stored XSS to RCE Chain - SSD Secure DisclosureExploit;Third Party Advisory
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