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CVE-2018-0495

Published: Jun 13, 2018Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-203
NVD MITRE
4.7CVSSMEDIUM
EPSS Score
0.9%
Top 45.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, 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.

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-203

Affected Products

libgcryptgnupg
Library
Security Products / pki-crypto
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
debian linuxdebian
On-premOS
Operating Systems / linux-distro
ansible towerredhat
On-prem
Operating Systems / linux-distro
enterprise linux desktopredhat
On-premOS
Operating Systems / linux-distro
gnupgoss-projectSecurity Productsaka libgcrypt, libksba
canonicalcommercialGBOperating Systemsaka canonical ltd.
debianoss-projectGBOperating Systemsaka debian gnu/linux
redhatcommercialUSOperating Systemsaka red hat
and 10 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Discovery
View detailed technique mapping

References

http://www.securitytracker.com/id/1041144
securitytracker.com
http://www.securitytracker.com/id/1041147
securitytracker.com
https://access.redhat.com/errata/RHSA-2018:3221
access.redhat.com
and 29 more references View all →

Timeline

Published
Jun 13, 2018
Last Updated
Nov 21, 2024

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