RCE in PostgreSQL
CVE-2019-9193
In PostgreSQL 9.3 through 11.2, the "COPY TO/FROM PROGRAM" function allows superusers and users in the 'pg_execute_server_program' group to execute arbitrary code in the context of the database's operating system user. This functionality is enabled by default and can be abused to run arbitrary operating system commands on Windows, Linux, and macOS. NOTE: Third parties claim/state this is not an issue because PostgreSQL functionality for ‘COPY TO/FROM PROGRAM’ is acting as intended. References state that in PostgreSQL, a superuser can execute commands as the server user without using the ‘COPY FROM PROGRAM’.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.917 (99.8th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.895 · newest: 0.917 · change: +0.021
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- paquier.xyz/postgresql-2/postgres-9-3-feature-highlight-copy-tofrom-program/ (Third Party Advisory)
- medium.com/greenwolf-security/authenticated-arbitrary-command-execution-on-post… (Exploit, Third Party Advisory)
- blog.hagander.net/when-a-vulnerability-is-not-a-vulnerability-244/ (Third Party Advisory)
- www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/authenticated-arbitrary… (Third Party Advisory)
- security.netapp.com/advisory/ntap-20190502-0003/ (Third Party Advisory)
- packetstormsecurity.com/files/152757/PostgreSQL-COPY-FROM-PROGRAM-Command-Execu… (Third Party Advisory)
- packetstormsecurity.com/files/166540/PostgreSQL-11.7-Remote-Code-Execution.html
- packetstormsecurity.com/files/171722/PostgreSQL-9.6.1-Remote-Code-Execution.html
Frequently asked questions
- What is CVE-2019-9193?
- CVE-2019-9193 is a high-severity vulnerability in PostgreSQL, classified under OS Command Injection. CVSS score: 7.2/10. Published 2019-04-01.
- How severe is CVE-2019-9193?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2019-9193 known to be exploited?
- 56 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.