CVE-2020-8162
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
โ
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.
Predictions
Exploit likelihood
30%
Patch ETA
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Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ if you've already worked around this in production โ publish your fix to the community-verified tier.
โ Propose a mitigation on Community โ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2:5.2.4.3+dfsg-1 |
| sid | Fixed | 2:5.2.4.3+dfsg-1 |
| forky | Fixed | 2:5.2.4.3+dfsg-1 |
| bullseye | Fixed | 2:5.2.4.3+dfsg-1 |
| bookworm | Fixed | 2:5.2.4.3+dfsg-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| RubyGems | activestorage | <~> 5.2.4, >= 5.2.4.3 | ~> 5.2.4, >= 5.2.4.3 |
| RubyGems | activestorage | >=5.0.0,<5.2.4.3 | 5.2.4.3 |
| RubyGems | activestorage | >=6.0.0,<6.0.3.1 | 6.0.3.1 |
References
- https://groups.google.com/forum/#!topic/rubyonrails-security/PjU3946mreQ
- https://nvd.nist.gov/vuln/detail/CVE-2020-8162
- https://github.com/aws/aws-sdk-ruby/issues/2098
- https://hackerone.com/reports/789579
- https://github.com/aws/aws-sdk-ruby
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2020-8162.yml
- https://groups.google.com/g/rubyonrails-security/c/PjU3946mreQ
- https://www.debian.org/security/2020/dsa-4766
- https://security-tracker.debian.org/tracker/CVE-2020-8162
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.