high
7.6
CWE
183 270 697
Advisory Published
CVE Published
Updated

CVE-2020-25696

First published: Wed Nov 04 2020(Updated: )

A flaw was found in the psql interactive terminal of PostgreSQL in versions before 13.1, before 12.5, before 11.10, before 10.15, before 9.6.20 and before 9.5.24. If an interactive psql session uses \gset when querying a compromised server, the attacker can execute arbitrary code as the operating system account running psql. 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/libpq<0:12.5-1.el8_3
0:12.5-1.el8_3
redhat/libpq<0:12.5-1.el8_0
0:12.5-1.el8_0
redhat/libpq<0:12.5-2.el8_1
0:12.5-2.el8_1
redhat/libpq<0:12.5-1.el8_2
0:12.5-1.el8_2
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>=9.5.0<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

https://bugzilla.redhat.com/show_bug.cgi?id=1894430

Remedy

Using \gset with a prefix not found among specially treated variables, e.g. any lowercase string, precludes the attack in an unpatched psql.

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-25696?

    CVE-2020-25696 is a vulnerability in the psql interactive terminal of PostgreSQL that allows an attacker to execute arbitrary code as the operating system user.

  • Which versions of PostgreSQL are affected by CVE-2020-25696?

    CVE-2020-25696 affects versions before 13.1, before 12.5, before 11.10, before 10.15, before 9.6.20, and before 9.5.24 of PostgreSQL.

  • How severe is CVE-2020-25696?

    CVE-2020-25696 has a severity rating of 7.5, which is considered high.

  • How can I fix CVE-2020-25696?

    To fix CVE-2020-25696, upgrade to version 13.1 or later if you are using PostgreSQL 13, version 12.5 or later if you are using PostgreSQL 12, version 11.10 or later if you are using PostgreSQL 11, version 10.15 or later if you are using PostgreSQL 10, version 9.6.20 or later if you are using PostgreSQL 9.6, or version 9.5.24 or later if you are using PostgreSQL 9.5.

  • Where can I find more information about CVE-2020-25696?

    You can find more information about CVE-2020-25696 on the Red Hat Bugzilla website. [Link 1](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1897233) [Link 2](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1897230) [Link 3](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1897227)

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