timing side channel

  1. CVE-2025-13912: WolfSSL Timing Side Channel Fixed in 5.8.4

    CVE-2025-13912 is a timing‑side‑channel concern in wolfSSL where compiler optimizations (notably from Clang/LLVM toolchains) can transform carefully written constant‑time C code into binaries whose runtime varies with secret data — a behavior that undermines cryptographic assumptions and was...
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    • constant time embedded security timing side channel wolfssl
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  2. CVE-2025-11932: WolfSSL TLS 1.3 PSK Binder Timing Fix in 5.8.4

    The TLS 1.3 pre-shared key (PSK) binder verification in wolfSSL contained a timing side‑channel: a non‑constant‑time comparison allowed tiny timing differences during binder verification that could, in theory, leak information about a PSK binder. The issue was assigned CVE‑2025‑11932, publicly...
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    • cve 2025 11932 timing side channel tls 1.3 psk binder wolfssl 5 8 4
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  3. CVE-2025-12888 Timing Fix for Xtensa ESP32 X25519 in WolfSSL

    A subtle timing weakness in X25519 implementations that affects Xtensa-based ESP32 chips has been logged as CVE-2025-12888, and wolfSSL—one of the mainstream embedded crypto libraries—has already shipped a targeted mitigation that changes build defaults for Xtensa targets to safer, low‑memory...
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    • constant time embedded cryptography timing side channel xtensa esp32
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    • Forum: Security Alerts