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XML External Entities Vulnerability in CVRF-CSAF-Converter

Moderate severity GitHub Reviewed Published Mar 16, 2022 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

pip cvrf2csaf (pip)

Affected versions

<= 1.0.0rc1

Patched versions

1.0.0rc2

Description

CVRF-CSAF-Converter before 1.0.0-rc2 resolves XML External Entities (XXE). This leads to the inclusion of arbitrary (local) file content into the generated output document. An attacker can exploit this to disclose information from the system running the converter.

References

Published by the National Vulnerability Database Mar 15, 2022
Published to the GitHub Advisory Database Mar 16, 2022
Reviewed Mar 18, 2022
Last updated Jan 27, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L

EPSS score

0.062%
(28th percentile)

Weaknesses

CVE ID

CVE-2022-27193

GHSA ID

GHSA-m8gq-83gh-v42v

Source code

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