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Vulnerability Details :

CVE-2019-3842

Summary
Assigner-redhat
Assigner Org ID-53f830b8-0a3f-465b-8143-3b8a9948e749
Published At-09 Apr, 2019 | 20:25
Updated At-09 Jun, 2025 | 15:47
Rejected At-
Credits

In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the "allow_active" element rather than "allow_any".

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:redhat
Assigner Org ID:53f830b8-0a3f-465b-8143-3b8a9948e749
Published At:09 Apr, 2019 | 20:25
Updated At:09 Jun, 2025 | 15:47
Rejected At:
▼CVE Numbering Authority (CNA)

In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the "allow_active" element rather than "allow_any".

Affected Products
Vendor
The systemd Project
Product
systemd
Versions
Affected
  • v242-rc4
Problem Types
TypeCWE IDDescription
CWECWE-285CWE-285
Type: CWE
CWE ID: CWE-285
Description: CWE-285
Metrics
VersionBase scoreBase severityVector
3.04.5MEDIUM
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Version: 3.0
Base score: 4.5
Base severity: MEDIUM
Vector:
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842
x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/
vendor-advisory
x_refsource_FEDORA
https://www.exploit-db.com/exploits/46743/
exploit
x_refsource_EXPLOIT-DB
http://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.html
x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html
mailing-list
x_refsource_MLIST
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html
vendor-advisory
x_refsource_SUSE
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
mailing-list
x_refsource_MLIST
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
mailing-list
x_refsource_MLIST
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842
Resource:
x_refsource_CONFIRM
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/
Resource:
vendor-advisory
x_refsource_FEDORA
Hyperlink: https://www.exploit-db.com/exploits/46743/
Resource:
exploit
x_refsource_EXPLOIT-DB
Hyperlink: http://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.html
Resource:
x_refsource_MISC
Hyperlink: https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html
Resource:
mailing-list
x_refsource_MLIST
Hyperlink: http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html
Resource:
vendor-advisory
x_refsource_SUSE
Hyperlink: https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
Resource:
mailing-list
x_refsource_MLIST
Hyperlink: https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
Resource:
mailing-list
x_refsource_MLIST
▼Authorized Data Publishers (ADP)
1. 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://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842
x_refsource_CONFIRM
x_transferred
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/
vendor-advisory
x_refsource_FEDORA
x_transferred
https://www.exploit-db.com/exploits/46743/
exploit
x_refsource_EXPLOIT-DB
x_transferred
http://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.html
x_refsource_MISC
x_transferred
https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html
mailing-list
x_refsource_MLIST
x_transferred
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html
vendor-advisory
x_refsource_SUSE
x_transferred
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
mailing-list
x_refsource_MLIST
x_transferred
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
mailing-list
x_refsource_MLIST
x_transferred
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842
Resource:
x_refsource_CONFIRM
x_transferred
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/
Resource:
vendor-advisory
x_refsource_FEDORA
x_transferred
Hyperlink: https://www.exploit-db.com/exploits/46743/
Resource:
exploit
x_refsource_EXPLOIT-DB
x_transferred
Hyperlink: http://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.html
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html
Resource:
mailing-list
x_refsource_MLIST
x_transferred
Hyperlink: http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html
Resource:
vendor-advisory
x_refsource_SUSE
x_transferred
Hyperlink: https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
Resource:
mailing-list
x_refsource_MLIST
x_transferred
Hyperlink: https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
Resource:
mailing-list
x_refsource_MLIST
x_transferred
2. CISA ADP Vulnrichment
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
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:secalert@redhat.com
Published At:09 Apr, 2019 | 21:29
Updated At:07 Nov, 2023 | 03:10

In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the "allow_active" element rather than "allow_any".

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
Primary3.17.0HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Secondary3.04.5MEDIUM
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Primary2.04.4MEDIUM
AV:L/AC:M/Au:N/C:P/I:P/A:P
Type: Primary
Version: 3.1
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.0
Base score: 4.5
Base severity: MEDIUM
Vector:
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Type: Primary
Version: 2.0
Base score: 4.4
Base severity: MEDIUM
Vector:
AV:L/AC:M/Au:N/C:P/I:P/A:P
CPE Matches
systemd_project
systemd_project
>>systemd>>Versions up to 241(inclusive)
cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*
systemd_project
systemd_project
>>systemd>>242
cpe:2.3:a:systemd_project:systemd:242:rc1:*:*:*:*:*:*
systemd_project
systemd_project
>>systemd>>242
cpe:2.3:a:systemd_project:systemd:242:rc2:*:*:*:*:*:*
systemd_project
systemd_project
>>systemd>>242
cpe:2.3:a:systemd_project:systemd:242:rc3:*:*:*:*:*:*
Red Hat, Inc.
redhat
>>enterprise_linux>>7.0
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
Fedora Project
fedoraproject
>>fedora>>30
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
Debian GNU/Linux
debian
>>debian_linux>>8.0
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-863Primarynvd@nist.gov
CWE-285Secondarysecalert@redhat.com
CWE ID: CWE-863
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-285
Type: Secondary
Source: secalert@redhat.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.htmlsecalert@redhat.com
Third Party Advisory
http://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.htmlsecalert@redhat.com
Exploit
Third Party Advisory
VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842secalert@redhat.com
Issue Tracking
Third Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3Esecalert@redhat.com
N/A
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3Esecalert@redhat.com
N/A
https://lists.debian.org/debian-lts-announce/2019/04/msg00022.htmlsecalert@redhat.com
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/secalert@redhat.com
N/A
https://www.exploit-db.com/exploits/46743/secalert@redhat.com
Exploit
Third Party Advisory
VDB Entry
Hyperlink: http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html
Source: secalert@redhat.com
Resource:
Third Party Advisory
Hyperlink: http://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.html
Source: secalert@redhat.com
Resource:
Exploit
Third Party Advisory
VDB Entry
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842
Source: secalert@redhat.com
Resource:
Issue Tracking
Third Party Advisory
Hyperlink: https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html
Source: secalert@redhat.com
Resource:
Third Party Advisory
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://www.exploit-db.com/exploits/46743/
Source: secalert@redhat.com
Resource:
Exploit
Third Party Advisory
VDB Entry

Change History

0
Information is not available yet

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