CVE-2018-12437

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.

Score

CVSS 3.1 4.9 Medium

Status

Modified - cve@mitre.org

Published

2018-06-15

Last modified

2024-08-05

Weaknesses

CWE-200

Affected products

• Libtomcrypt (Libtom)
• Op-tee (Trustedfirmware)

References

• https://security.gentoo.org/glsa/202007-53
• https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/