Incorrect Location of auth_start_session() in xrdp 0.9.1 Leads to PAM Session Module Initialization Vulnerability

Incorrect Location of auth_start_session() in xrdp 0.9.1 Leads to PAM Session Module Initialization Vulnerability

CVE-2017-6967 · HIGH Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

xrdp 0.9.1 calls the PAM function auth_start_session() in an incorrect location, leading to PAM session modules not being properly initialized, with a potential consequence of incorrect configurations or elevation of privileges, aka a pam_limits.so bypass.

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