Multiple vulnerabilities in PostgreSQL



Published: 2021-02-11
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-3393
CVE-2021-20229
CWE-ID CWE-200
CWE-264
Exploitation vector Network
Public exploit N/A
Vulnerable software
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PostgreSQL
Server applications / Database software

Vendor PostgreSQL Global Development Group

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU50655

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-3393

CWE-ID: CWE-200 - Information Exposure

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output in the error message. A remote user having an UPDATE privilege on a partitioned table but lacking the SELECT privilege on some column may be able to acquire denied-column values from an error message. This vulnerability is similar to #VU30418.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PostgreSQL: 13.0 - 13.1, 12.0 - 12.5, 11.0 - 11.10


CPE2.3 External links

http://www.postgresql.org/about/news/postgresql-132-126-1111-1016-9621-and-9525-released-2165/

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

2) Security restrictions bypass

EUVDB-ID: #VU50656

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-20229

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to application does not properly impose security restrictions. A user having a SELECT privilege on an individual column can craft a special query that returns all columns of the table. Additionally, a stored view that uses column-level privileges will have incomplete column-usage bitmaps. In installations that depend on column-level permissions for security, it is recommended to execute CREATE OR REPLACE on all user-defined views to force them to be re-parsed.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PostgreSQL: 13.0 - 13.1


CPE2.3 External links

http://www.postgresql.org/about/news/postgresql-132-126-1111-1016-9621-and-9525-released-2165/

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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