Vulnerability-Lookup

RHSA-2020:2816

Vulnerability from csaf_redhat - Published: 2020-07-02 14:31 - Updated: 2026-06-28 12:16

Summary

Red Hat Security Advisory: RH-SSO 7.4.1 adapters for Red Hat JBoss Enterprise Application Platform 6

Severity

Important

Notes

Topic: A security update is now available for Red Hat Single Sign-On 7.4.1 adapters for Red Hat JBoss Enterprise Application Platform 6 Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: Packages: Red Hat Single Sign-On 7.4.1 adapters for Red Hat JBoss Enterprise Application Platform 6 Security Fix(es): * keycloak: Lack of checks in ObjectInputStream leading to Remote Code Execution (CVE-2020-1714) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2020-1714

A flaw was found in Keycloak, where the code base contains usages of ObjectInputStream without type checks. This flaw allows an attacker to inject arbitrarily serialized Java Objects, which would then get deserialized in a privileged context and potentially lead to remote code execution.

7.5 (High)


                
                  CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-20 - Improper Input Validation

Affected products

Fixed 6 products

Product	Version	Remediation
Unresolved product id: 6Server-JBEAP-6.4:keycloak-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el6.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 6Server-JBEAP-6.4:keycloak-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el6.src	—	Vendor Fix fix Workaround
Unresolved product id: 6Server-JBEAP-6.4:keycloak-saml-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el6.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-JBEAP-6.4:keycloak-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el7.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-JBEAP-6.4:keycloak-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el7.src	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-JBEAP-6.4:keycloak-saml-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el7.noarch	—	Vendor Fix fix Workaround

Threats

Impact Important

References

10 references

URL	Category
https://access.redhat.com/errata/RHSA-2020:2816	self
https://access.redhat.com/security/updates/classi…	external
https://access.redhat.com/documentation/en-us/red…	external
https://bugzilla.redhat.com/show_bug.cgi?id=1705975	external
https://issues.redhat.com/browse/KEYCLOAK-13949	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2020-1714	self
https://bugzilla.redhat.com/show_bug.cgi?id=1705975	external
https://www.cve.org/CVERecord?id=CVE-2020-1714	external
https://nvd.nist.gov/vuln/detail/CVE-2020-1714	external

Acknowledgments

Thomas Darimont

JSON

To clipboard

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  "vulnerabilities": [
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      "acknowledgments": [
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      "cwe": {
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        "name": "Improper Input Validation"
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          "title": "Vulnerability description"
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          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "6Server-JBEAP-6.4:keycloak-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el6.noarch",
            "6Server-JBEAP-6.4:keycloak-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el6.src",
            "6Server-JBEAP-6.4:keycloak-saml-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el6.noarch",
            "7Server-JBEAP-6.4:keycloak-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el7.noarch",
            "7Server-JBEAP-6.4:keycloak-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el7.src",
            "7Server-JBEAP-6.4:keycloak-saml-adapter-sso7_4-eap6-0:9.0.4-1.redhat_00001.1.ep6.el7.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "keycloak: Lack of checks in ObjectInputStream leading to Remote Code Execution"
    }
  ]
}

CVE-2020-1714 (GCVE-0-2020-1714)

Vulnerability from cvelistv5 – Published: 2020-05-13 18:25 – Updated: 2024-08-04 06:46

Summary

A flaw was found in Keycloak before version 11.0.0, where the code base contains usages of ObjectInputStream without type checks. This flaw allows an attacker to inject arbitrarily serialized Java Objects, which would then get deserialized in a privileged context and potentially lead to remote code execution.

Severity

7.5 (High)


                        
                          CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-20

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1212 records in the last 180 days details

References

2 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://github.com/keycloak/keycloak/pull/7053	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Red Hat	keycloak	Affected: before 11.0.0

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.

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