CVE-2024-2339: anonymizer Input Validation Flaw — Fix

Description

PostgreSQL Anonymizer v1.2 contains a vulnerability that allows a user who owns a table to elevate to superuser. A user can define a masking function for a column and place malicious code in that function. When a privileged user applies the masking rules using the static masking or the anonymous dump method, the malicious code is executed and can grant escalated privileges to the malicious user. PostgreSQL Anonymizer v1.2 does provide a protection against this risk with the restrict_to_trusted_schemas option, but that protection is incomplete. Users that don't own a table, especially masked users cannot exploit this vulnerability. The problem is resolved in v1.3.

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CVSS v3.1 Score

8.0

HIGH

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor	Product	Versions
dalibo	anonymizer	All

References

Advisories & Patches

https://gitlab.com/dalibo/postgresql_anonymizer/-/commit/e517b38e62e50871b04011598e73a7308bdae9d9 https://gitlab.com/dalibo/postgresql_anonymizer/-/commit/e517b38e62e50871b04011598e73a7308bdae9d9

Frequently Asked Questions

What is CVE-2024-2339? +

PostgreSQL Anonymizer v1.2 contains a vulnerability that allows a user who owns a table to elevate to superuser. A user can define a masking function for a column and place malicious code in that function. When a privileged user applies the masking rules using the static masking or the anonymous dump method, the malicious code is executed and can grant escalated privileges to the malicious user. PostgreSQL Anonymizer v1.2 does provide a protection against this risk with the restrict_to_trusted_schemas option, but that protection is incomplete. Users that don't own a table, especially masked users cannot exploit this vulnerability. The problem is resolved in v1.3. It has a CVSS v3.1 base score of 8.0 (HIGH).

How severe is CVE-2024-2339? +

CVE-2024-2339 has a CVSS v3.1 score of 8.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-2339? +

CVE-2024-2339 affects products from dalibo, specifically: anonymizer. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-2339? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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