high
8.8
CWE
89
Advisory Published
CVE Published
Updated

CVE-2020-25695: SQL Injection

First published: Wed Nov 04 2020(Updated: )

A flaw was found in PostgreSQL versions before 13.1, before 12.5, before 11.10, before 10.15, before 9.6.20 and before 9.5.24. An attacker having permission to create non-temporary objects in at least one schema can execute arbitrary SQL functions under the identity of a superuser. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/postgresql<0:9.2.24-6.el7_9
0:9.2.24-6.el7_9
redhat/rh-postgresql10-postgresql<0:10.15-1.el7
0:10.15-1.el7
redhat/rh-postgresql12-postgresql<0:12.5-1.el7
0:12.5-1.el7
redhat/postgresql<13.1
13.1
redhat/postgresql<12.5
12.5
redhat/postgresql<11.10
11.10
redhat/postgresql<10.15
10.15
redhat/postgresql<9.6.20
9.6.20
redhat/postgresql<9.5.24
9.5.24
PostgreSQL PostgreSQL<9.5.24
PostgreSQL PostgreSQL>=9.6.0<9.6.20
PostgreSQL PostgreSQL>=10.0<10.15
PostgreSQL PostgreSQL>=11.0<11.10
PostgreSQL PostgreSQL>=12.0<12.5
PostgreSQL PostgreSQL>=13.0<13.1
Debian Debian Linux=9.0

Remedy

While promptly updating PostgreSQL is the best remediation for most users, a user unable to do that can work around the vulnerability by disabling autovacuum and not manually running ANALYZE, CLUSTER, REINDEX, CREATE INDEX, VACUUM FULL, REFRESH MATERIALIZED VIEW, or a restore from output of the pg_dump command. Performance may degrade quickly under this workaround.

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-25695?

    CVE-2020-25695 is a vulnerability found in PostgreSQL versions before 13.1, before 12.5, before 11.10, before 10.15, before 9.6.20, and before 9.5.24 that allows an attacker to execute arbitrary SQL functions as a superuser.

  • What software versions are affected by CVE-2020-25695?

    CVE-2020-25695 affects PostgreSQL versions before 13.1, before 12.5, before 11.10, before 10.15, before 9.6.20, and before 9.5.24.

  • What is the severity of CVE-2020-25695?

    CVE-2020-25695 has a severity rating of 8.8 (high).

  • How can an attacker exploit CVE-2020-25695?

    An attacker with permission to create non-temporary objects in at least one schema can exploit CVE-2020-25695 to execute arbitrary SQL functions as a superuser.

  • Are there any references for CVE-2020-25695?

    Yes, you can find references for CVE-2020-25695 at the following links: [CVE-2020-25695](https://www.cve.org/CVERecord?id=CVE-2020-25695), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-25695), [Staaldraad](https://staaldraad.github.io/post/2020-12-15-cve-2020-25695-postgresql-privesc/), [PostgreSQL News](https://www.postgresql.org/about/news/postgresql-131-125-1110-1015-9620-and-9524-released-2111/), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=1894425), and [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2021:1512).

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