CVE-2023-39417: Red Hat Advanced Cluster Security 4.2 · SQL Injection
Affects Red Hat Advanced Cluster Security 4.2Source CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 26 Oct 2026, 10:12 UTC
- EPSS
- 1.6% chance of exploitation in 30 days – higher than 76% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 11 Aug 2023
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
- Immediately review and apply any available patches or updates from Red Hat for Advanced Cluster Security and PostgreSQL extensions to address this vulnerability.
- Audit and restrict database-level privileges, specifically the CREATE privilege, to the minimum necessary users and roles to reduce the attack surface.
- Conduct a thorough inventory of installed PostgreSQL extensions, focusing on non-bundled and trusted extensions, and assess their necessity and security posture.
- Implement strict input validation and sanitization practices for any database operations involving extension scripts or dynamic SQL generation.
- Employ database activity monitoring and anomaly detection to identify unusual CREATE operations or privilege escalations.
- Use role-based access control (RBAC) and principle of least privilege (PoLP) to limit administrative access to database components.
- Regularly back up critical databases and verify recovery procedures to mitigate impact in case of compromise.
- Engage in security awareness training for database administrators regarding secure extension management and privilege assignment.
- Consider network segmentation and isolation of database servers to limit exposure to potential attackers.
- Monitor security advisories from Red Hat and PostgreSQL communities for updates or emerging exploit information.
Description
IN THE EXTENSION SCRIPT, a SQL Injection vulnerability was found in PostgreSQL if it uses @extowner@, @extschema@, or @extschema:...@ inside a quoting construct (dollar quoting, '', or ""). If an administrator has installed files of a vulnerable, trusted, non-bundled extension, an attacker with database-level CREATE privilege can execute arbitrary code as the bootstrap superuser.
References
- access.redhat.com/errata/RHSA-2023:7545 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7579 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7580 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7581 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7616 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7656 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7666 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7667 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7694 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7695 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7714 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7770 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7772 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7784 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7785 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7883 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7884 (opens in a new tab)
- access.redhat.com/errata/RHSA-2023:7885 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:0304 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:0332 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:0337 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2023-39417 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2228111 (opens in a new tab)
- postgresql.org/support/security/CVE-2023-39417 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2023/10/msg00003.html (opens in a new tab)
- security.netapp.com/advisory/ntap-20230915-0002/ (opens in a new tab)
- debian.org/security/2023/dsa-5553 (opens in a new tab)
- debian.org/security/2023/dsa-5554 (opens in a new tab)