Information disclosure in postgresql (Alpine package)

1) Information disclosure

EUVDB-ID: #VU50655

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

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 update from vendor's website.

Vulnerable software versions

postgresql (Alpine package): 11.1-r0 - 12.5-r0

External links

http://git.alpinelinux.org/aports/commit/?id=2ac5b2e57e4f1cab9571f0d467b1da99baa8c11b
http://git.alpinelinux.org/aports/commit/?id=c729312a3e9d40ea50e135c021624c4a2edfafa0
http://git.alpinelinux.org/aports/commit/?id=29681ecc8547bee9af8e9c4a2aa0c707717013b6
http://git.alpinelinux.org/aports/commit/?id=e04ed3a2193bc362cadea9bb8b1911ea83e77b6a
http://git.alpinelinux.org/aports/commit/?id=87ef3a18fd31dcdb5a100656f41792899105eb76
http://git.alpinelinux.org/aports/commit/?id=de44e327d46ea44425f83cbf8c0d3368ecf74399

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.