CVE-2020-27831
Published: 27 May 2021
Summary
CVE-2020-27831 is a medium-severity Improper Access Control (CWE-284) vulnerability in Redhat Quay. Its CVSS base score is 4.3 (Medium).
Operationally, ranked at the 31.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2020-20330
Vulnerability details
A flaw was found in Red Hat Quay, where it does not properly protect the authorization token when authorizing email addresses for repository email notifications. This flaw allows an attacker to add email addresses they do not own to repository…
more
notifications.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Training covers access control policies and the consequences of improper access grants or usage by users.
Documenting role-based training completion allows verification that only trained individuals receive or retain access, making improper access control harder to exploit through untrained personnel.
Documented and acknowledged rules define permitted access, reducing improper access control by establishing clear behavioral boundaries and accountability.
Disabling all system access and revoking credentials upon termination directly prevents improper access control by former personnel.
The access control policy and procedures directly mandate and enforce proper access control mechanisms across the organization.
Device lock enforces restricted access until re-authentication, directly reducing unauthorized use of active sessions.
Supervision and review of access control activities directly detects and remediates improper access configurations or usages.
Explicitly identifying and documenting actions permitted without identification or authentication enforces proper access control boundaries by defining justified exceptions.