2.7

CVSS Score

3.1

Basic Information

CVE ID

CVE-2023-37480

GHSA ID

GHSA-g95c-2jgm-hqc6

EPSS Score

0.08424%

CWE

CWE-400

Published

7/18/2023

Updated

11/6/2023

KEV Status

Technology

Python

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CVE-2023-37480

CVE-2023-37480:
Fides Webserver Vulnerable to Zip Bomb File Uploads

Impact

The Fides webserver is vulnerable to a type of Denial of Service (DoS) attack. Attackers can exploit a weakness in the connector template upload feature to upload a malicious zip bomb file, resulting in resource exhaustion and service unavailability for all users of the Fides webserver.

This vulnerability affects Fides versions 2.11.0 through 2.15.1. Exploitation is limited to users with elevated privileges with the CONNECTOR_TEMPLATE_REGISTER scope, which includes root users and users with the owner role.

Patches

The vulnerability has been patched in Fides version 2.16.0. Users are advised to upgrade to this version or later to secure their systems against this threat.

Workarounds

There is no known workaround to remediate this vulnerability without upgrading. If an attack occurs, the impact can be mitigated by manually or automatically restarting the affected container.

References

More information about this type of vulnerability can be found at the following links:

https://www.bamsoftware.com/hacks/zipbomb/
https://python-security.readthedocs.io/security.html#archives-and-zip-bomb-cve-2019-9674

(GitHub Advisory)

2.7

CVSS Score

3.1

Basic Information

CVE ID

CVE-2023-37480

GHSA ID

GHSA-g95c-2jgm-hqc6

EPSS Score

0.08424%

CWE

CWE-400

Published

7/18/2023

Updated

11/6/2023

KEV Status

Technology

Python

Technical Details

CVSS Vector

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

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
ethyca-fides	pip	>= 2.11.0, < 2.16.0	2.16.0

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from the save_template function handling zip uploads without size validation. The pre-patch code lacked the verify_zip check that was added in the fix. This function is the entry point for connector template uploads and was responsible for processing potentially malicious zip files without safeguards against decompression bombs. The added verify_zip function in the patch directly addresses this gap by implementing size checks before processing.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

WAF Protection Rules

WAF Rule

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Reasoning

T** vuln*r**ility st*ms *rom t** s*v*_t*mpl*t* *un*tion **n*lin* zip uplo**s wit*out siz* v*li**tion. T** pr*-p*t** *o** l**k** t** v*ri*y_zip ****k t**t w*s ***** in t** *ix. T*is *un*tion is t** *ntry point *or *onn**tor t*mpl*t* uplo**s *n* w*s r*

2.7

Basic Information

Concerned about an active attack path?

CVE-2023-37480: Fides Webserver Vulnerable to Zip Bomb File Uploads

Impact

Patches

Workarounds

References

2.7

Basic Information

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

CVE-2023-37480:
Fides Webserver Vulnerable to Zip Bomb File Uploads

Vulnerability Intelligence
Miggo AI