Medium severity4.7OSV Advisory· Published Jun 15, 2018· Updated Jun 17, 2026
CVE-2018-12436
CVE-2018-12436
Description
wolfcrypt/src/ecc.c in wolfSSL before 3.15.1.patch allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
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Affected products
2Patches
Vulnerability mechanics
References
3- github.com/wolfSSL/wolfssl/commit/9b9568d500f31f964af26ba8d01e542e1f27e5canvdPatchThird Party Advisory
- www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/nvdThird Party Advisory
- www.wolfssl.com/wolfssh-and-rohnp/nvdVendor Advisory
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