Amazon Linux AMI update for postgresql92

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU76041

Risk: Medium

CVSSv4.0: 6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-2454

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary code on the system.

The vulnerability exists due to improperly imposed security restrictions. A remote database user with   CREATE privilege can bypass protective search_path changes via "CREATE SCHEMA ... schema_element" command and execute arbitrary code on the system.

Mitigation

Update the affected packages:

i686:
    postgresql92-debuginfo-9.2.24-3.69.amzn1.i686
    postgresql92-devel-9.2.24-3.69.amzn1.i686
    postgresql92-libs-9.2.24-3.69.amzn1.i686
    postgresql92-docs-9.2.24-3.69.amzn1.i686
    postgresql92-plpython26-9.2.24-3.69.amzn1.i686
    postgresql92-pltcl-9.2.24-3.69.amzn1.i686
    postgresql92-server-compat-9.2.24-3.69.amzn1.i686
    postgresql92-plperl-9.2.24-3.69.amzn1.i686
    postgresql92-contrib-9.2.24-3.69.amzn1.i686
    postgresql92-server-9.2.24-3.69.amzn1.i686
    postgresql92-plpython27-9.2.24-3.69.amzn1.i686
    postgresql92-test-9.2.24-3.69.amzn1.i686
    postgresql92-9.2.24-3.69.amzn1.i686

src:
    postgresql92-9.2.24-3.69.amzn1.src

x86_64:
    postgresql92-docs-9.2.24-3.69.amzn1.x86_64
    postgresql92-plpython27-9.2.24-3.69.amzn1.x86_64
    postgresql92-test-9.2.24-3.69.amzn1.x86_64
    postgresql92-plperl-9.2.24-3.69.amzn1.x86_64
    postgresql92-contrib-9.2.24-3.69.amzn1.x86_64
    postgresql92-9.2.24-3.69.amzn1.x86_64
    postgresql92-libs-9.2.24-3.69.amzn1.x86_64
    postgresql92-server-9.2.24-3.69.amzn1.x86_64
    postgresql92-debuginfo-9.2.24-3.69.amzn1.x86_64
    postgresql92-pltcl-9.2.24-3.69.amzn1.x86_64
    postgresql92-plpython26-9.2.24-3.69.amzn1.x86_64
    postgresql92-devel-9.2.24-3.69.amzn1.x86_64
    postgresql92-server-compat-9.2.24-3.69.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

postgresql92: before 9.2.24-3.69

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
• cpe:2.3:a:amazon_web_services:postgresql92:*:*:*:*:*:amazon_linux_ami:*:*

External links

https://alas.aws.amazon.com/ALAS-2023-1759.html

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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