CVE-2018-12437

Public Exploit

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.

Category

4.9
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory gentoo.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/ exploit third party advisory technical description
https://security.gentoo.org/glsa/202007-53 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-12437?
CVE-2018-12437 has been scored as a medium severity vulnerability.
How to fix CVE-2018-12437?
To fix CVE-2018-12437, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-12437 being actively exploited in the wild?
It is possible that CVE-2018-12437 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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