KLA10790 Multiple vulnerabilities in PostgreSQL

Multiple serious vulnerabilities have been found in PostgreSQL. Malicious users can exploit these vulnerabilities to bypass security restrictions, obtain sensitive information or cause denial of service.

Below is a complete list of vulnerabilities

1. An unknown vulnerability can be exploited via a specially designed index page to bypass security restrictions and obtain sensitive information or cause denial of service;
2. An improper row-security status maintenance can be exploited via session manipulations to bypass security restrictions.

Technical details

Vulnerability (1) related to brin_page_type and brin_metapage_info functions in the pageinspect extension. This vulnerability can be exploited via a specially designed bytea value in a BRIN index page.

Vulnerability (2) related to maintenance of row-security status in cached plans. This vulnerability can be exploited via leveraging session that perform queries as more than one role.

Original advisories

Security fixes note

Related products

PostgreSQL

CVE list

CVE-2016-2193 warning

CVE-2016-3065 critical

Solution

Update to the latest version

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Impacts

• OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

• PE

Privilege escalation. Exploitation of vulnerabilities with this impact can lead to performing by abuser actions, which are normally disallowed for current role.

Affected Products

• PostgreSQL 9.5 versions earlier than 9.5.2