Vulnerability-Lookup

OESA-2021-1145 (CVE-2020-8165)

Vulnerability from osv_openeuler – Published: 2021-04-07 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

rubygem-rails security update

Details

Ruby on Rails is a full-stack web framework optimized for programmer happiness and sustainable productivity. It encourages beautiful code by favoring convention over configuration.

Security Fix(es):

A deserialization of untrusted data vulnernerability exists in rails < 5.2.4.3, rails < 6.0.3.1 that can allow an attacker to unmarshal user-provided objects in MemCacheStore and RedisCacheStore potentially resulting in an RCE.(CVE-2020-8165)

A client side enforcement of server side security vulnerability exists in rails < 5.2.4.2 and rails < 6.0.3.1 ActiveStorages S3 adapter that allows the Content-Length of a direct file upload to be modified by an end user bypassing upload limits.(CVE-2020-8162)

Severity

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

URL

Type

	https://openeuler.org/en/security/safety-bulletin…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2020-8165	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2020-8162	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "noarch": [
          "rubygem-rails-5.2.4.4-1.oe1.noarch.rpm",
          "rubygem-rails-doc-5.2.4.4-1.oe1.noarch.rpm"
        ],
        "src": [
          "rubygem-rails-5.2.4.4-1.oe1.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "rubygem-rails",
        "purl": "pkg:rpm/openEuler/rubygem-rails\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Critical"
  },
  "details": "Ruby on Rails is a full-stack web framework optimized for programmer happiness and sustainable productivity. It encourages beautiful code by favoring convention over configuration.\r\n\r\nSecurity Fix(es):\r\n\r\nA deserialization of untrusted data vulnernerability exists in rails \u0026lt; 5.2.4.3, rails \u0026lt; 6.0.3.1 that can allow an attacker to unmarshal user-provided objects in MemCacheStore and RedisCacheStore potentially resulting in an RCE.(CVE-2020-8165)\n\nA client side enforcement of server side security vulnerability exists in rails \u0026lt; 5.2.4.2 and rails \u0026lt; 6.0.3.1 ActiveStorages S3 adapter that allows the Content-Length of a direct file upload to be modified by an end user bypassing upload limits.(CVE-2020-8162)",
  "id": "OESA-2021-1145",
  "modified": "2026-08-06T11:04:23Z",
  "published": "2021-04-07T11:04:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1145"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8165"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8162"
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  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "rubygem-rails security update",
  "upstream": [
    "CVE-2020-8165",
    "CVE-2020-8162"
  ]
}

CVE-2020-8162 (GCVE-0-2020-8162)

Vulnerability from cvelistv5 – Published: 2020-06-19 17:02 – Updated: 2024-08-04 09:48

Summary

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.

Severity

No CVSS data available.

CWE

CWE-602 - Client-Side Enforcement of Server-Side Security (CWE-602)

Assigner

hackerone mitre root

References

3 references

URL	Tags
https://hackerone.com/reports/789579	x_refsource_MISC
https://groups.google.com/g/rubyonrails-security/…	x_refsource_MISC
https://www.debian.org/security/2020/dsa-4766	vendor-advisoryx_refsource_DEBIAN

Impacted products

1 product

Vendor	Product	Version
n/a	https://github.com/rails/rails	Affected: rails >= 5.2.4.3, rails >= 6.0.3.1

Show details on NVD website

JSON

To clipboard

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CVE-2020-8165 (GCVE-0-2020-8165)

Vulnerability from cvelistv5 – Published: 2020-06-19 17:05 – Updated: 2025-05-09 20:03

Summary

Severity

No CVSS data available.

CWE

CWE-502 - Deserialization of Untrusted Data (CWE-502)

Assigner

hackerone mitre root

References

9 references

URL	Tags
https://hackerone.com/reports/413388	x_refsource_MISC
https://groups.google.com/g/rubyonrails-security/…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://weblog.rubyonrails.org/2020/5/18/Rails-5-…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://www.debian.org/security/2020/dsa-4766	vendor-advisoryx_refsource_DEBIAN
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://security.netapp.com/advisory/ntap-2025050…

Impacted products

1 product

Vendor	Product	Version
n/a	https://github.com/rails/rails	Affected: Fixed in 5.2.4.3, 6.0.3.1

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2021-1145 (CVE-2020-8165)

CVE-2020-8162 (GCVE-0-2020-8162)

CVE-2020-8165 (GCVE-0-2020-8165)

Tags

Sightings

Nomenclature

Related by attack behaviour