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Category:   Application (Database)  >   PostgreSQL Vendors:   postgresql.org
PostgreSQL Bugs Let Remote Users Access and Modify Data in Transit and Let Remote Authenticated Users Obtain Password and Other Potentially Sensitive Information
SecurityTracker Alert ID:  1038476
SecurityTracker URL:  http://securitytracker.com/id/1038476
CVE Reference:   CVE-2017-7484, CVE-2017-7485, CVE-2017-7486   (Links to External Site)
Date:  May 12 2017
Impact:   Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Modification of system information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Several vulnerabilities were reported in PostgreSQL. A remote user can access and modify data communicated by the target system. A remote authenticated user can obtain foreign passwords on the target system. A remote authenticated user can obtain potentially sensitive information from tables on the target system.

A remote authenticated user can invoke certain selectivity estimation functions that do not check user privileges before providing information from pg_statistic to obtain potentially sensitive information from ostensibly restricted tables [CVE-2017-7484].

The system does not enforce the PGREQUIRESSL environment variable settings. As a result, a remote user that can conduct a man-in-the-middle attack can cause an SSL connection to be downgraded to use no encryption to access and modify data communicated by the target system [CVE-2017-7485].

The pg_user_mappings access qualifications are not properly implemented. A remote authenticated user may be able to view foreign server passwords [CVE-2017-7486].

Andrew Wheelwright, Daniel Gustafsson, and Robert Haas reported these vulnerabilities.

Impact:   A remote user can access and modify data communicated by the target system.

A remote authenticated user can obtain view foreign server passwords on the target system.

A remote authenticated user can obtain potentially sensitive information on the target system.

Solution:   The vendor has issued a fix (9.2.21, 9.3.17, 9.4.12, 9.5.7, 9.6.3).

The vendor advisory is available at:

https://www.postgresql.org/about/news/1746/

Vendor URL:  www.postgresql.org/about/news/1746/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jul 6 2017 (Red Hat Issues Fix) PostgreSQL Bugs Let Remote Users Access and Modify Data in Transit and Let Remote Authenticated Users Obtain Password and Other Potentially Sensitive Information
Red Hat has issued a fix for rh-postgresql94-postgresql and rh-postgresql95-postgresql for Red Hat Enterprise Linux 6, 6.7, 7, and 7.3.
Aug 1 2017 (Red Hat Issues Fix) PostgreSQL Bugs Let Remote Users Access and Modify Data in Transit and Let Remote Authenticated Users Obtain Password and Other Potentially Sensitive Information
Red Hat has issued a fix for Red Hat Enterprise Linux 6.
Aug 1 2017 (Red Hat Issues Fix) PostgreSQL Bugs Let Remote Users Access and Modify Data in Transit and Let Remote Authenticated Users Obtain Password and Other Potentially Sensitive Information
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
Aug 11 2017 (Oracle Issues Fix for Oracle Linux) PostgreSQL Bugs Let Remote Users Access and Modify Data in Transit and Let Remote Authenticated Users Obtain Password and Other Potentially Sensitive Information
Oracle has issued a fix for Oracle Linux 7.



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