#VU7874 Denial of service in PostgreSQL - CVE-2017-7548

Vulnerability identifier: #VU7874

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-7548

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PostgreSQL
Server applications / Database software

Vendor: PostgreSQL Global Development Group

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

---

External links
https://www.postgresql.org/about/news/1772/

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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