CVE-2026-2645
Acceptance of CertificateVerify Message before ClientKeyExchange in TLS 1.2
概要
Acceptance of CertificateVerify Message before ClientKeyExchange in TLS 1.2
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
In wolfSSL 5.8.2 and earlier, a logic flaw existed in the TLS 1.2 server state machine implementation. The server could incorrectly accept the CertificateVerify message before the ClientKeyExchange message had been received. This issue affects wolfSSL before 5.8.4 (wolfSSL 5.8.2 and earlier is vulnerable, 5.8.4 is not vulnerable). In 5.8.4 wolfSSL would detect the issue later in the handshake. 5.9.0 was further hardened to catch the issue earlier in the handshake.
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Debian DEBIAN-CVE-2026-2645 wolfssl
- Ubuntu UBUNTU-CVE-2026-2645 wolfssl
参照URL
- advisory github.com
- advisory nvd.nist.gov
- patch github.com