| Name | CVE-2020-8162 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4766-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| rails (PTS) | jessie, jessie (lts) | 2:4.1.8-1+deb8u9 | fixed |
| stretch (security), stretch (lts), stretch | 2:4.2.7.1-1+deb9u5 | fixed |
| buster (security), buster, buster (lts) | 2:5.2.2.1+dfsg-1+deb10u5 | fixed |
| bullseye (security), bullseye | 2:6.0.3.7+dfsg-2+deb11u2 | fixed |
| bookworm | 2:6.1.7.3+dfsg-2~deb12u1 | fixed |
| sid, trixie | 2:6.1.7.3+dfsg-4 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| rails | source | wheezy | (unfixed) | end-of-life | | |
| rails | source | jessie | (not affected) | | | |
| rails | source | stretch | (not affected) | | | |
| rails | source | buster | 2:5.2.2.1+dfsg-1+deb10u2 | | DSA-4766-1 | |
| rails | source | (unstable) | 2:5.2.4.3+dfsg-1 | | | |
Notes
[stretch] - rails <not-affected> (Vulnerable code introduced later)
[jessie] - rails <not-affected> (Vulnerable code introduced later)
https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released
https://github.com/rails/rails/commit/e8df5648515a0e8324d3b3c4bdb7bde6802cd8be (5.2)