Information disclosure in postgresql (Alpine package)

1) Information disclosure

EUVDB-ID: #VU20004

Risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-10209

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to way PostgreSQL processes user-defined hash equality operators. A remote attacker can under certain circumstances read arbitrary bytes from server memory.

Note, exploitation of this vulnerability requires a superuser to create unusual operators.

Mitigation

Install update from vendor's website.

Vulnerable software versions

postgresql (Alpine package): 11.1-r0 - 11.4-r1

CPE2.3

• cpe:2.3:o:alpine:postgresql_alpine_package:11.1-r0:*:*:*:*:alpine_linux:*:3.8
• cpe:2.3:o:alpine:postgresql_alpine_package:11.2-r0:*:*:*:*:alpine_linux:*:3.9
• cpe:2.3:o:alpine:postgresql_alpine_package:11.2-r1:*:*:*:*:alpine_linux:*:3.9

External links

https://git.alpinelinux.org/aports/commit/?id=2b95c8929982c3ff86b48ffe921cf9ddff6aeebd
https://git.alpinelinux.org/aports/commit/?id=5f580c412de14f7329bf77293a1c8bbce8a74d48
https://git.alpinelinux.org/aports/commit/?id=25f75434661e66fa9c230b7c12d6c9b64f356109
https://git.alpinelinux.org/aports/commit/?id=89778c626effbec81e49cb0dabf996bc58469ec2
https://git.alpinelinux.org/aports/commit/?id=50bddd883b32a1297dccbae70ca9740bc193b9ea

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.