CVE-2025-8714: PostgreSQL pg_dump RCE Vulnerability

CVE-2025-8714 Overview

CVE-2025-8714 is a high-severity code injection vulnerability affecting PostgreSQL's pg_dump utility. The vulnerability allows a malicious superuser on the origin database server to inject arbitrary code that executes during restore operations. When a victim uses psql to restore a malicious dump file, the injected code runs under the client's operating system account context via psql meta-commands. This vulnerability also affects pg_dumpall and pg_restore when generating plain-format dumps.

Critical Impact

A malicious database superuser can achieve arbitrary code execution on client systems that restore compromised PostgreSQL dump files, potentially leading to full system compromise.

Affected Products

• PostgreSQL versions before 17.6
• PostgreSQL versions before 16.10
• PostgreSQL versions before 15.14
• PostgreSQL versions before 14.19
• PostgreSQL versions before 13.22

Discovery Timeline

• 2025-08-14 - CVE-2025-8714 published to NVD
• 2025-08-15 - Last updated in NVD database

Technical Details for CVE-2025-8714

Vulnerability Analysis

This vulnerability stems from untrusted data inclusion (CWE-829) in PostgreSQL's dump utilities. The core issue is that pg_dump fails to properly sanitize data originating from the database server before embedding it into dump files. A malicious superuser controlling the origin PostgreSQL server can craft database objects containing specially formatted content that, when processed by pg_dump, results in dump files containing injected psql meta-commands.

When an unsuspecting administrator or automated backup system restores such a malicious dump using psql, the embedded meta-commands execute with the privileges of the operating system user running the restore operation. This attack vector is particularly concerning because dump and restore operations are common administrative tasks, and administrators typically trust dump files generated from their own infrastructure.

This vulnerability shares similarities with MySQL CVE-2024-21096, indicating a class of backup utility vulnerabilities where insufficient output sanitization enables code injection during restore operations.

Root Cause

The root cause is insufficient validation and sanitization of database content during the dump generation process. PostgreSQL's pg_dump utility processes various database objects and serializes them into SQL statements and psql meta-commands. The vulnerability exists because user-controlled data from the database (which a malicious superuser can manipulate) is not properly escaped or validated before being written to the dump output. This allows carefully crafted database content to break out of its expected context and inject arbitrary psql meta-commands.

Attack Vector

The attack requires a malicious actor with superuser privileges on the PostgreSQL server being dumped. The attacker can plant malicious payloads in database objects that will be processed during dump operations. The exploitation chain proceeds as follows:

1. Payload Injection: A malicious superuser creates or modifies database objects to contain specially crafted content designed to exploit the sanitization weakness
2. Dump Generation: When an administrator runs pg_dump, pg_dumpall, or pg_restore (in plain-format mode), the malicious content is embedded in the output without proper sanitization
3. Code Execution: When the victim restores the dump using psql, the injected meta-commands execute on the client system with the privileges of the OS user running the restore

The attack requires user interaction (restore operation) and network access to distribute the malicious dump file, but the actual code execution occurs locally on the victim's system.

Detection Methods for CVE-2025-8714

Indicators of Compromise

• Unexpected psql meta-commands (such as \!, \copy, or \o) appearing in dump files that should contain only SQL statements
• Database objects with unusual or suspicious content patterns, particularly those containing backslash sequences
• Anomalous command execution during database restore operations
• Unexpected processes spawned by psql or child processes of the restore operation

Detection Strategies

• Implement dump file integrity validation by scanning for unexpected meta-commands before restore operations
• Monitor for unusual psql meta-command execution patterns during restore procedures
• Deploy file integrity monitoring on backup storage locations to detect unauthorized modifications
• Audit superuser activity on PostgreSQL servers to identify potential payload injection attempts

Monitoring Recommendations

• Enable comprehensive PostgreSQL audit logging for all superuser DDL and DML operations
• Monitor process execution chains for unexpected child processes spawned during restore operations
• Implement alerting for psql meta-commands that execute shell commands or write to external files
• Track changes to database objects that could contain injection payloads

How to Mitigate CVE-2025-8714

Immediate Actions Required

• Upgrade PostgreSQL to patched versions: 17.6, 16.10, 15.14, 14.19, or 13.22 respectively
• Audit all superuser accounts and revoke unnecessary superuser privileges
• Review recently generated dump files for signs of tampering or injection
• Implement strict access controls on dump file storage and distribution

Patch Information

PostgreSQL has released security updates addressing this vulnerability. Administrators should upgrade to the following minimum versions:

Refer to the PostgreSQL Security Advisory for official patch information and upgrade guidance.

Workarounds

• Manually inspect dump files for suspicious meta-commands before restoring, particularly looking for \!, \copy, \o, or other potentially dangerous psql commands
• Use pg_restore with custom or directory format dumps and the --no-comments flag where applicable to reduce attack surface
• Restore dumps only from trusted sources with verified provenance and consider implementing cryptographic signing for dump files
• Run restore operations in isolated environments or containers to limit the impact of potential code execution

# Scan dump file for potentially malicious meta-commands before restore
grep -E '^\s*\\!' backup.sql && echo "WARNING: Shell escape commands detected"
grep -E '^\s*\\copy|^\s*\\o|^\s*\\g' backup.sql && echo "WARNING: Potentially dangerous meta-commands detected"

# Restore in restricted environment with limited privileges
sudo -u postgres_restore psql -f backup.sql target_database