Vulnerability Information
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Vulnerability Title
robrichards/xmlseclibs has an Libxml2 Canonicalization error which can bypass Digest/Signature validation
Vulnerability Description
xmlseclibs is a library written in PHP for working with XML Encryption and Signatures. Versions 3.1.3 contain an authentication bypass vulnerability due to a flaw in the libxml2 canonicalization process during document transformation. When libxml2’s canonicalization is invoked on an invalid XML input, it may return an empty string rather than a canonicalized node. xmlseclibs then proceeds to compute the DigestValue over this empty string, treating it as if canonicalization succeeded. This issue is fixed in version 3.1.4. Workarounds include treating canonicalization failures (exceptions or nil/empty outputs) as fatal and aborting validation, and/or adding explicit checks to reject when canonicalize returns nil/empty or raises errors.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L
Vulnerability Type
未捕获的异常
Vulnerability Title
Xmlseclibs 安全漏洞
Vulnerability Description
Xmlseclibs是一个用 PHP 编写的库，用于处理 XML 加密和签名。 Xmlseclibs 3.1.3版本存在安全漏洞，该漏洞源于libxml2规范化过程存在缺陷，可能导致身份验证绕过。
CVSS Information
N/A
Vulnerability Type
N/A