CVE-2019-3842
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 4.5epss 1.2%
from disclosure to weapon14 days
Published on NVDApr 9
1st PoC+14d
exploitation probability
1.2%top 34% of all CVEs
observed exploitation
nono source reports it
3 public exploit(s)
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".
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Affected products
The systemd Project · systemdpublic PoCs found — 3✓ VexDay Proof
exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/46743cve_referencepacketstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.htmlunverifiedcve_referencewww.exploit-db.com/exploits/46743/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.htmlhttp://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3Ehttps://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3Ehttps://lists.debian.org/debian-lts-announce/2019/04/msg00022.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/https://www.exploit-db.com/exploits/46743/