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CVE-2021-3677

Public on 2022-03-02
Modified on 2024-07-11
Description

A flaw was found in postgresql. A purpose-crafted query can read arbitrary bytes of server memory. In the default configuration, any authenticated database user can complete this attack at will. The attack does not require the ability to create objects. If server settings include max_worker_processes=0, the known versions of this attack are infeasible. However, undiscovered variants of the attack may be independent of that setting.

Severity
Medium
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CVSS v3 Base Score
6.5
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Postgresql12 Extra postgresql 2023-08-07 05:59 ALAS2POSTGRESQL12-2023-002
Amazon Linux 2 - Postgresql13 Extra postgresql 2023-08-07 05:59 ALAS2POSTGRESQL13-2023-002

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD CVSSv2 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N
NVD CVSSv3 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Red Hat: CVE-2021-3677 Mitre: CVE-2021-3677 FAQs regarding Amazon Linux ALAS/CVE Severity