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CVE-2017-20002

Published: Mar 17, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-269
7.8HIGH
NVD MITRE
EPSS Score
0.4%
Top 66.7%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Self-Check
OpenVAS

Description

The Debian shadow package before 1:4.5-1 for Shadow incorrectly lists pts/0 and pts/1 as physical terminals in /etc/securetty. This allows local users to login as password-less users even if they are connected by non-physical means such as SSH (hence bypassing PAM's nullok_secure configuration). This notably affects environments such as virtual machines automatically generated with a default blank root password, allowing all local users to escalate privileges.

No summary for this CVE yet.

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-269

Affected Products

debian
oss-project·GBaka debian gnu/linux
shadowOn-prem
Operating Systems / linux-distro
debian linuxOn-premOS
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special Edition для «Эльбрус»On-premOS
Operating Systems / linux-distro
Rob Jansen
ShadowOn-prem
Enterprise Software / bi-reporting
АО «Концерн ВНИИНС»
commercial·RUaka ao konsern vniins
ОС ОН «Стрелец»On-premOS
Operating Systems / linux-distro
and 1 more affected products View all →

Exploitability

1 exploit source identified

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

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://nvd.nist.gov/vuln/detail/CVE-2017-20002
nvd.nist.gov
https://security-tracker.debian.org/tracker/CVE-2017-20002
security-tracker.debian.org
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957
bugs.debian.org
and 7 more references View all →

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