Vulnerability Details : CVE-2020-8162
A client side enforcement of server side security vulnerability exists in rails < 5.2.4.2 and rails < 6.0.3.1 ActiveStorage's S3 adapter that allows the Content-Length of a direct file upload to be modified by an end user bypassing upload limits.
Products affected by CVE-2020-8162
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*
- cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-8162
0.25%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 65 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-8162
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-8162
-
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.Assigned by: nvd@nist.gov (Primary)
-
The product is composed of a server that relies on the client to implement a mechanism that is intended to protect the server.Assigned by: support@hackerone.com (Secondary)
References for CVE-2020-8162
-
https://www.debian.org/security/2020/dsa-4766
Debian -- Security Information -- DSA-4766-1 railsThird Party Advisory
-
https://groups.google.com/g/rubyonrails-security/c/PjU3946mreQ
Oh no, you can't view this page!Mailing List;Patch;Third Party Advisory
-
https://hackerone.com/reports/789579
#789579 ActiveStorage direct upload fails to sign content-length header for S3 serviceExploit;Third Party Advisory
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