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CVE-2020-12402

Published: Jul 9, 2020Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-203
NVD MITRE
4.4CVSSMEDIUM
EPSS Score
0.3%
Top 74.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. *Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78.

CVSS Vector Breakdown

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

Weaknesses

CWE-203

Affected Products

firefoxmozilla
On-premDesktop App
Consumer Software / browser
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
leapopensuse
On-premOS
Operating Systems / linux-distro
debian linuxdebian
On-premOS
Operating Systems / linux-distro
FirefoxMozilla
On-premDesktop App
Consumer Software / browser
mozillaoss-projectUSConsumer Softwareaka mozilla corp.
fedoraprojectoss-projectUSOperating Systemsaka fedora project
opensuseoss-projectDEOperating Systemsaka opensuse
debianoss-projectGBOperating Systemsaka debian gnu/linux
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://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
lists.opensuse.org
and 26 more references View all →

Timeline

Published
Jul 9, 2020
Last Updated
Nov 21, 2024

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