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CVE-2018-0735

Timing attack against ECDSA signature generation

Published: Oct 29, 2018Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-327
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
4.7%
Top 9.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.1.1a (Affected 1.1.1).

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-327

Affected Products

OpenSSLOpenSSLOSS Libraries
opensslopensslOSS Libraries
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
debian linuxdebian
On-premOS
Operating Systems / linux-distro
node.jsnodejsOSS Libraries
openssloss-projectUSOSS Librariesaka open ssl
canonicalcommercialGBOperating Systemsaka canonical ltd.
debianoss-projectGBOperating Systemsaka debian gnu/linux
nodejsoss-projectUSOSS Librariesaka node.js, node
and 49 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=56fb454d281a023b3f950d969693553d3f3ceea1
git.openssl.org
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
oracle.com
http://www.securityfocus.com/bid/105750
securityfocus.com
and 17 more references View all →

Timeline

Published
Oct 29, 2018
Last Updated
Nov 21, 2024

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