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CVE-2019-18634

Published: Jan 29, 2020Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-787
NVD MITRE
7.8CVSSHIGH
EPSS Score
19.4%
Top 3.0%
CISA KEV
Not in KEV
Exploits
4 Known
Remediation
Patch Available

Description

In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c.

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-787

Affected Products

n/an/a
sudosudo project
Mixed
Operating Systems / unix-bsd
debian linuxdebian
On-premOS
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise LinuxRed Hat Inc.
On-premOS
Operating Systems / linux-distro
sudo projectoss-projectUSOperating Systemsaka sudo
debianoss-projectGBOperating Systemsaka debian gnu/linux
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
red hat inc.commercialUSOperating 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

4 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://support.apple.com/kb/HT210919
support.apple.com
https://seclists.org/bugtraq/2020/Jan/44
seclists.org
https://www.sudo.ws/security.html
sudo.ws
and 37 more references View all →

Timeline

Published
Jan 29, 2020
Last Updated
Nov 21, 2024

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