Description (CNA)
Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple references. We now reject these as malformed and curb the memory amplification vector as a result.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Go standard library / crypto/tls | affected 0 before 1.26.9; affected 1.27.0-0 before 1.27.2 |
CWE
No CWE identifiers supplied.
References
- https://go.dev/cl/847312
- https://go.dev/issue/81855
- https://groups.google.com/g/golang-announce/c/U2fTuyDJznI
- https://pkg.go.dev/vuln/GO-2026-6607
ADP enrichment
No English description supplied.
No references supplied.