CVE-2020-8162

NameCVE-2020-8162
DescriptionA 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
rails (PTS)stretch2:4.2.7.1-1+deb9u2fixed
stretch (security)2:4.2.7.1-1+deb9u3fixed
buster2:5.2.2.1+dfsg-1+deb10u1vulnerable
bullseye2:5.2.4.3+dfsg-2fixed
sid2:6.0.3.2+dfsg-8fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
railssourcejessie(not affected)
railssourcestretch(not affected)
railssource(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

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