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CVE-2021-23240

Published: Jan 12, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-59
NVD MITRE
7.8CVSSHIGH
EPSS Score
1.1%
Top 39.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

selinux_edit_copy_tfiles in sudoedit in Sudo before 1.9.5 allows a local unprivileged user to gain file ownership and escalate privileges by replacing a temporary file with a symlink to an arbitrary file target. This affects SELinux RBAC support in permissive mode. Machines without SELinux are not vulnerable.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-59

Affected Products

n/an/a
sudosudo project
Mixed
Operating Systems / unix-bsd
hci management nodenetappHardware Firmware
solidfirenetappHardware Firmware
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
sudo projectoss-projectUSOperating Systemsaka sudo
netappcommercialUSHardware Firmware
fedoraprojectoss-projectUSOperating Systemsaka fedora project

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://bugzilla.suse.com/show_bug.cgi?id=CVE-2021-23240
bugzilla.suse.com
https://www.sudo.ws/stable.html#1.9.5
sudo.ws
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EE42Y35SMJOLONAIBNYNFC7J44UUZ2Y6/
lists.fedoraproject.org
and 5 more references View all →

Timeline

Published
Jan 12, 2021
Last Updated
Nov 21, 2024

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