未評価
An issue was discovered in Mbed TLS 3.5.x and 3.6.x through 3.6.5 and TF-PSA-Crypto 1.0. There is a lack of contributory behavior in FFDH due to impro...
CVE-2026-34872
SecPulse初出
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-2026-34872 mbedtls
- Ubuntu UBUNTU-CVE-2026-34872 mbedtls
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)。
An issue was discovered in Mbed TLS 3.5.x and 3.6.x through 3.6.5 and TF-PSA-Crypto 1.0. There is a lack of contributory behavior in FFDH due to improper input validation. Using finite-field Diffie-Hellman, the other party can force the shared secret into a small set of values (lack of contributory behavior). This is a problem for protocols that depend on contributory behavior (which is not the case for TLS). The attack can be carried by the peer, or depending on the protocol by an active network attacker (person in the middle).
参照URL
- advisory github.com
- advisory mbed-tls.readthedocs.io
- advisory mbed-tls.readthedocs.io
- advisory nvd.nist.gov