Description
LibTomCrypt through 1.18.1 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.
References (2)
Core 2
Core References
Exploit, Technical Description, Third Party Advisory x_refsource_misc
https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202007-53
Scores
CVSS v3
4.9
EPSS
0.0054
EPSS Percentile
41.4%
Attack Vector
PHYSICAL
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Details
CWE
CWE-200
Status
published
Products (3)
libtom/libtomcrypt
< 1.18.1
linaro/op-tee
< 3.5.0
trustedfirmware/op-tee
< 3.5.0
Published
Jun 15, 2018
Tracked Since
Feb 18, 2026