CVE-2018-12437

Severity Score

4.9

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

LibTomCrypt hasta la versión 1.18.1 permite un ataque de canal lateral por caché de memoria en las firmas DSA y ECDSA. Esto también se conoce como Return Of the Hidden Number Problem (ROHNP). Para descubrir una clave ECDSA, el atacante necesita acceso a la máquina local o a una máquina virtual diferente en el mismo host físico.

*Credits: N/A

Attack Vector

Physical

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-06-14 CVE Reserved
2018-06-15 CVE Published
2023-03-07 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem	2024-08-05

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/202007-53	2021-06-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libtom Search vendor "Libtom"		Libtomcrypt Search vendor "Libtom" for product "Libtomcrypt"				<= 1.18.1 Search vendor "Libtom" for product "Libtomcrypt" and version " <= 1.18.1"		-		Affected
Linaro Search vendor "Linaro"		Op-tee Search vendor "Linaro" for product "Op-tee"				<= 3.5.0 Search vendor "Linaro" for product "Op-tee" and version " <= 3.5.0"		-		Affected