CVE-2019-3842

CVSS V2 Medium 4.4 CVSS V3 High 7
Description
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".
Overview
  • CVE ID
  • CVE-2019-3842
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2019-04-09T21:29:03
  • Last Modified Date
  • 2022-01-31T18:51:48
Weakness Enumerations
CWE URL
CWE-863 http://cwe.mitre.org/data/definitions/863.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:* 1 OR 241
cpe:2.3:a:systemd_project:systemd:242:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:systemd_project:systemd:242:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:systemd_project:systemd:242:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:M/Au:N/C:P/I:P/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.4
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.4
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842 Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/ Mailing List Release Notes Third Party Advisory
https://www.exploit-db.com/exploits/46743/ Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.html Exploit Third Party Advisory VDB Entry
https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html Third Party Advisory
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E Third Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2019-3842
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3842
History
Created Old Value New Value Data Type Notes
2022-05-10 06:35:40 Added to TrackCVE
2022-12-03 19:29:07 2019-04-09T21:29Z 2019-04-09T21:29:03 CVE Published Date updated
2022-12-03 19:29:07 2022-01-31T18:51:48 CVE Modified Date updated
2022-12-03 19:29:07 Analyzed Vulnerability Status updated