Multiple vulnerabilities in PostgreSQL



Published: 2017-08-10 | Updated: 2017-08-15
Risk Low
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2017-7547
CVE-2017-7548
CVE-2017-7546
CWE-ID CWE-284
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 3 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU7875

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2017-7547

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to obtain potentially sensitive information on the target system.

The weakness exists in the pg_user_mappings function due to insufficient security restrictions. A remote attacker can gain access to important data and conduct further attacks.

Mitigation

The vulnerability is addressed in the following versions: 9.2.22, 9.3.18, 9.4.13, 9.5.8, 9.6.4.

Vulnerable software versions

PostgreSQL: 9.2.1 - 9.2.21, 9.3.1 - 9.3.17, 9.4.0 - 9.4.12, 9.5.0 - 9.5.7, 9.6.0 - 9.6.3


CPE2.3 External links

http://www.postgresql.org/about/news/1772/

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

2) Denial of service

EUVDB-ID: #VU7874

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2017-7548

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to cause DoS condition on the target system.

The weakness exists due to an access control flaw in the lo_put() function to change the data in a large object. A remote attacker can cause the application to crash.

Mitigation

The vulnerability is addressed in the following versions: 9.2.22, 9.3.18, 9.4.13, 9.5.8, 9.6.4.

Vulnerable software versions

PostgreSQL: 9.2.1 - 9.2.21, 9.3.1 - 9.3.17, 9.4.0 - 9.4.12, 9.5.0 - 9.5.7, 9.6.0 - 9.6.3


CPE2.3 External links

http://www.postgresql.org/about/news/1772/

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

3) Authentication bypass

EUVDB-ID: #VU7873

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2017-7546

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication on the target system.

The weakness exists in the systems using libpq or a libpq-based connection driver to perform password-based authentication methods due to insufficient security restrictions. A remote attacker can submit an empty password to disable password login and log in to the system.

Successful exploitation of the vulnerability may result in unauthorized access to the system and further attacks.

Mitigation

The vulnerability is addressed in the following versions: 9.2.22, 9.3.18, 9.4.13, 9.5.8, 9.6.4.

Vulnerable software versions

PostgreSQL: 9.2.1 - 9.2.21, 9.3.1 - 9.3.17, 9.4.0 - 9.4.12, 9.5.0 - 9.5.7, 9.6.0 - 9.6.3


CPE2.3 External links

http://www.postgresql.org/about/news/1772/

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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