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github.com/russellhaering/goxmldsig vulnerable to Signature Validation Bypass

Moderate severity GitHub Reviewed Published Sep 29, 2020 in russellhaering/goxmldsig • Updated Aug 29, 2023

Package

gomod github.com/russellhaering/goxmldsig (Go)

Affected versions

< 1.1.0

Patched versions

1.1.0

Description

Impact

With a carefully crafted XML file, an attacker can completely bypass signature validation and pass off an altered file as a signed one.

Patches

A patch is available, all users of goxmldsig should upgrade to v1.1.0.

For more information

If you have any questions or comments about this advisory open an issue at https://github.com/russellhaering/goxmldsig

References

@russellhaering russellhaering published to russellhaering/goxmldsig Sep 29, 2020
Published by the National Vulnerability Database Sep 29, 2020
Reviewed May 24, 2021
Published to the GitHub Advisory Database May 24, 2021
Last updated Aug 29, 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
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

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:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS score

0.097%
(42nd percentile)

Weaknesses

CVE ID

CVE-2020-15216

GHSA ID

GHSA-q547-gmf8-8jr7

Source code

No known source code

Credits

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