Privilege escalation in PostgreSQL

1) Privilege escalation

EUVDB-ID: #VU10810

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2018-1058

CWE-ID: CWE-427 - Uncontrolled Search Path Element

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists in the pg_dump function due to improper security restrictions. A local attacker can submit a malicious function in separate namespaces and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to version 10.3.

Vulnerable software versions

PostgreSQL: 9.3.13 - 10.2

CPE2.3

• cpe:2.3:a:postgresql_global_development_group:postgresql:9.3.21:*:*:*:*:*:*:*
• cpe:2.3:a:postgresql_global_development_group:postgresql:9.4.16:*:*:*:*:*:*:*
• cpe:2.3:a:postgresql_global_development_group:postgresql:9.5.11:*:*:*:*:*:*:*
• cpe:2.3:a:postgresql_global_development_group:postgresql:9.6.7:*:*:*:*:*:*:*
• cpe:2.3:a:postgresql_global_development_group:postgresql:10.2:*:*:*:*:*:*:*

External links

https://www.postgresql.org/download

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.