Vulnerabilities in XML Signature Implementations Due to SSRF Risks
CVE-2024-34581
What is CVE-2024-34581?
The W3C XML Signature Syntax and Processing (XMLDsig) specification, starting with 1.0, was originally published with a "RetrievalMethod is a URI ... that may be used to obtain key and/or certificate information" statement and no accompanying information about SSRF risks, and this may have contributed to vulnerable implementations such as those discussed in CVE-2023-36661 and CVE-2024-21893. NOTE: this was mitigated in 1.1 and 2.0 via a directly referenced Best Practices document that calls on implementers to be wary of SSRF.

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News Articles
CVE-2024-34581 : W3C XML SIGNATURE SYNTAX AND PROCESSING SPECIFICATION 1.0 SERVER-SIDE REQUEST FORGERY - Cloud WAF
CVE-2024-34581 : The W3C XML Signature Syntax and Processing (XMLDsig) specification, starting with 1.0, was originally published with a "RetrievalMethod is a URI.
References
Timeline
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First article discovered by prophaze.com
Vulnerability published
Vulnerability Reserved
