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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.3 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- EPSS
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Source
- cve@mitre.org
References
- https://github.com/zmanion/Vulnerabilities/blob/main/CVE-2024-21893.md
- https://www.w3.org/Signature/Drafts/WD-xmldsig-core-200003plc/
- https://www.w3.org/TR/2013/NOTE-xmldsig-bestpractices-20130411/
- https://www.w3.org/TR/xmldsig-core1/
- https://www.w3.org/TR/xmldsig-core2/
- https://github.com/zmanion/Vulnerabilities/blob/main/CVE-2024-21893.md
- https://www.w3.org/Signature/Drafts/WD-xmldsig-core-200003plc/
- https://www.w3.org/TR/2013/NOTE-xmldsig-bestpractices-20130411/
- https://www.w3.org/TR/xmldsig-core1/
- https://www.w3.org/TR/xmldsig-core2/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.