CVE-2026-117666
Mở trang đầy đủCVSS 9.1 CRITICAL
ssl_verify_fun: partial-label wildcard certificate matches hostnames across a label boundary
Mô tả
Improper Validation of Certificate with Host Mismatch vulnerability in deadtrickster ssl_verify_fun allows an adversary in the middle to impersonate a TLS peer via a certificate that carries a partial-label wildcard. try_match_wildcard/4 in src/ssl_verify_hostname.erl anchors only the text before and after the * of an identifier such as f*.example.net, so the wildcard also consumes dots and the certificate is accepted for f.evil.example.net. RFC 6125 confines a wildcard to the left-most label. The same matcher lets *.168.1.1 match the IP literal 192.168.1.1. Whole-label wildcards are matched correctly.
Erlang/OTP 20.0 and later check the hostname in ssl before a user verify_fun sees valid_peer, so a client that keeps server_name_indication set rejects the mismatch regardless. Exposed are clients that disable SNI, servers that verify client certificate hostnames with this library, and direct callers of verify_cert_hostname/2.
This issue affects ssl_verify_fun: from 1.0.1 before 1.1.8.
Điểm và phân loại
- CVSS
- 9.1 CRITICAL v4.0
- Nguồn điểm
- NVD
- Mức độ (theo nguồn)
- CRITICAL
- EPSS
- —
- CWE
- CWE-297
Vector CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Ảnh hưởng
| Package | Bản bị ảnh hưởng | Bản đã sửa |
|---|---|---|
erlang ssl_verify_fun |
>= 1.0.1, < 1.1.8 |
1.1.8
|
Sản phẩm
- deadtrickster ssl_verify_fun
Vì sao được giữ
- CVSS 9.1 >= 8.0
Loại tác động
Không nhận ra loại tác động nào từ CWE, vector hay mô tả.
Dữ liệu riêng của nguồn
- CVE.org · Đơn vị cấp mã
- EEF
- OSV.dev · ID
- EEF-CVE-2026-117666
Tham khảo
- https://cna.erlef.org/cves/CVE-2026-117666.html
- https://github.com/deadtrickster/ssl_verify_fun.erl/commit/a49ca56923356c7a3981692b23c42ef32c2990e0
- https://github.com/deadtrickster/ssl_verify_fun.erl/commit/ca34031299cd2e0c98794c0da4ba556b94e39aad
- https://github.com/deadtrickster/ssl_verify_fun.erl/pull/33
- https://github.com/deadtrickster/ssl_verify_fun.erl/security/advisories/GHSA-7gw2-hphm-c5px
- https://osv.dev/vulnerability/EEF-CVE-2026-117666
- https://hex.pm/packages/ssl_verify_fun