CVE-2023-49087

HIGH EPSS 9.1%
Published Nov 30, 20232y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Nov 30, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

Description

xml-security is a library that implements XML signatures and encryption. Validation of an XML signature requires verification that the hash value of the related XML-document matches a specific DigestValue-value, but also that the cryptographic signature on the SignedInfo-tree (the one that contains the DigestValue) verifies and matches a trusted public key. If an attacker somehow (i.e. by exploiting a bug in PHP's canonicalization function) manages to manipulate the canonicalized version's DigestValue, it would be possible to forge the signature. This issue has been patched in version 1.6.12 and 5.0.0-alpha.13.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
9.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-345

Affected Products 2

VendorProductVersionRange
simplesamlphpsaml25.0.0any
simplesamlphpxml-security1.6.11any

References 2

  • github.com https://github.com/simplesamlphp/xml-security/commit/f509e3083dd7870cce5880c804b5122317287581
    Patch
  • github.com https://github.com/simplesamlphp/xml-security/security/advisories/GHSA-ww7x-3gxh-qm6r
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/simplesamlphp/xml-security/commit/f509e3083dd7870cce5880c804b5122317287581
    Patch