CVE-2026-94200 Improper Validation of Consistency within Input vulnerability in Erlang OTP ssl (tls_handshake_1_3, ssl_handshake and…
Description
Improper Validation of Consistency within Input vulnerability in Erlang OTP ssl (tls_handshake_1_3, ssl_handshake and tls_client_ticket_store modules) allows a malicious TLS 1.3 server to cause a denial of service of the ssl application on the client node. The TLS 1.3 client decodes the extensions of a NewSessionTicket message as if they came from EncryptedExtensions. It therefore accepts a 0-length early_data extension, a form that is only valid in ClientHello and EncryptedExtensions. With {session_tickets, auto}, the client stores the ticket in the node-global tls_client_ticket_store. On the next automatic resumption, tls_handshake_1_3:get_max_early_data/1 crashes the store with a case_clause. Repeated crashes can exceed the restart intensity of the ssl supervisors, which use the rest_for_one strategy, and take down ssl for all connections on the node. This issue affects OTP from OTP 23.3 before OTP 27.3.4.19, OTP 28.5.0.8, and OTP 29.1.2, corresponding to ssl from 10.3 before 11.2.12.14, 11.6.0.7, and 11.7.8.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| otp | Versions non publiées |
Références
- GitHub Advisory github.com
- EEF CNA record for CVE-2026-94200 cna.erlef.org
- OSV record EEF-CVE-2026-94200 osv.dev
- Erlang/OTP version ordering www.erlang.org
- Introducing commit 0abe6f6 in erlang/otp github.com
- Fix commit 66febc1 in erlang/otp github.com
- Fix commit 00a333b in erlang/otp github.com
- Fix commit cd03348 in erlang/otp github.com
Chronologie
- Publiée
- Dernière modification