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Vulnerability Details :

CVE-2018-7169

Summary
Assigner-mitre
Assigner Org ID-8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At-15 Feb, 2018 | 19:00
Updated At-05 Aug, 2024 | 06:24
Rejected At-
Credits

An issue was discovered in shadow 4.5. newgidmap (in shadow-utils) is setuid and allows an unprivileged user to be placed in a user namespace where setgroups(2) is permitted. This allows an attacker to remove themselves from a supplementary group, which may allow access to certain filesystem paths if the administrator has used "group blacklisting" (e.g., chmod g-rwx) to restrict access to paths. This flaw effectively reverts a security feature in the kernel (in particular, the /proc/self/setgroups knob) to prevent this sort of privilege escalation.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mitre
Assigner Org ID:8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At:15 Feb, 2018 | 19:00
Updated At:05 Aug, 2024 | 06:24
Rejected At:
▼CVE Numbering Authority (CNA)

An issue was discovered in shadow 4.5. newgidmap (in shadow-utils) is setuid and allows an unprivileged user to be placed in a user namespace where setgroups(2) is permitted. This allows an attacker to remove themselves from a supplementary group, which may allow access to certain filesystem paths if the administrator has used "group blacklisting" (e.g., chmod g-rwx) to restrict access to paths. This flaw effectively reverts a security feature in the kernel (in particular, the /proc/self/setgroups knob) to prevent this sort of privilege escalation.

Affected Products
Vendor
n/a
Product
n/a
Versions
Affected
  • n/a
Problem Types
TypeCWE IDDescription
textN/An/a
Type: text
CWE ID: N/A
Description: n/a
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1729357
x_refsource_MISC
https://security.gentoo.org/glsa/201805-09
vendor-advisory
x_refsource_GENTOO
Hyperlink: https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1729357
Resource:
x_refsource_MISC
Hyperlink: https://security.gentoo.org/glsa/201805-09
Resource:
vendor-advisory
x_refsource_GENTOO
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1729357
x_refsource_MISC
x_transferred
https://security.gentoo.org/glsa/201805-09
vendor-advisory
x_refsource_GENTOO
x_transferred
Hyperlink: https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1729357
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://security.gentoo.org/glsa/201805-09
Resource:
vendor-advisory
x_refsource_GENTOO
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cve@mitre.org
Published At:15 Feb, 2018 | 20:29
Updated At:03 Oct, 2019 | 00:03

An issue was discovered in shadow 4.5. newgidmap (in shadow-utils) is setuid and allows an unprivileged user to be placed in a user namespace where setgroups(2) is permitted. This allows an attacker to remove themselves from a supplementary group, which may allow access to certain filesystem paths if the administrator has used "group blacklisting" (e.g., chmod g-rwx) to restrict access to paths. This flaw effectively reverts a security feature in the kernel (in particular, the /proc/self/setgroups knob) to prevent this sort of privilege escalation.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.05.3MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Primary2.05.0MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N
Type: Primary
Version: 3.0
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Type: Primary
Version: 2.0
Base score: 5.0
Base severity: MEDIUM
Vector:
AV:N/AC:L/Au:N/C:P/I:N/A:N
CPE Matches

shadow_project
shadow_project
>>shadow>>4.5
cpe:2.3:a:shadow_project:shadow:4.5:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-732Primarynvd@nist.gov
CWE ID: CWE-732
Type: Primary
Source: nvd@nist.gov
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1729357cve@mitre.org
Exploit
Issue Tracking
Third Party Advisory
https://security.gentoo.org/glsa/201805-09cve@mitre.org
Third Party Advisory
Hyperlink: https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1729357
Source: cve@mitre.org
Resource:
Exploit
Issue Tracking
Third Party Advisory
Hyperlink: https://security.gentoo.org/glsa/201805-09
Source: cve@mitre.org
Resource:
Third Party Advisory

Change History

0
Information is not available yet

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