Improper (D)TLS key boundary enforcement
概要
Improper (D)TLS key boundary enforcement
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)。
wolfSSL prior to 5.6.6 did not check that messages in one (D)TLS record do not span key boundaries. As a result, it was possible to combine (D)TLS messages using different keys into one (D)TLS record. The most extreme edge case is that, in (D)TLS 1.3, it was possible that an unencrypted (D)TLS 1.3 record from the server containing first a ServerHello message and then the rest of the first server flight would be accepted by a wolfSSL client. In (D)TLS 1.3 the handshake is encrypted after the ServerHello but a wolfSSL client would accept an unencrypted flight from the server. This does not compromise key negotiation and authentication so it is assigned a low severity rating.
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-2023-6937 wolfssl
参照URL
- advisory github.com
- advisory nvd.nist.gov
- advisory wolfssl.com
- package github.com
- patch github.com