Medium severity4.7NVD Advisory· Published Jun 15, 2018· Updated Jun 17, 2026
CVE-2018-12439
CVE-2018-12439
Description
MatrixSSL through 3.9.5 Open 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.
Affected products
2Patches
Vulnerability mechanics
References
1- www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/nvdThird Party Advisory
News mentions
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