Improper Authorization in postgresql (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-1720
CWE-ID CWE-285
Exploitation vector Network
Public exploit N/A
Vulnerable software
 postgresql (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper Authorization

EUVDB-ID: #VU25333

Risk: Low

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

CVE-ID: CVE-2020-1720

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform unauthorized modification of data in database.

The vulnerability exists due to the ALTER ... DEPENDS ON EXTENSION sub-commands do not perform authorization checks, which can allow an unprivileged user to drop any function, procedure, materialized view, index, or trigger under certain conditions. This attack is possible if an administrator has installed an extension and an unprivileged user can CREATE, or an extension owner either executes DROP EXTENSION predictably or can be convinced to execute DROP EXTENSION.

Mitigation

Install update from vendor's website.

Vulnerable software versions

postgresql (Alpine package): 9.6.2-r0 - 11.6-r0

postgresql (Alpine package):

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=a7ec52917d10a2542188bcf3e97f6474ec61ba62
https://git.alpinelinux.org/aports/commit/?id=5600c80ab97b0bed725ec1c24f981a765e54593b
https://git.alpinelinux.org/aports/commit/?id=c2110f5a7667d71596172fb142d3a573bb958c83
https://git.alpinelinux.org/aports/commit/?id=2b95c8929982c3ff86b48ffe921cf9ddff6aeebd
https://git.alpinelinux.org/aports/commit/?id=5f580c412de14f7329bf77293a1c8bbce8a74d48


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.



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