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Signature validation bypass in XmlSecLibs

High severity GitHub Reviewed Published Nov 8, 2019 • Updated Aug 18, 2021

Package

composer robrichards/xmlseclibs (Composer )

Affected versions

< 2.1.1
>= 3.0.0, < 3.0.4

Patched versions

2.1.1
3.0.4

Description

Rob Richards XmlSecLibs, all versions prior to v3.0.3, as used for example by SimpleSAMLphp, performed incorrect validation of cryptographic signatures in XML messages, allowing an authenticated attacker to impersonate others or elevate privileges by creating a crafted XML message.

References

Severity

High
8.8
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CVE ID

CVE-2019-3465

GHSA ID

GHSA-pqm6-cgwr-x6pf

Source code

No known source code
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