CVE-2021-41617 Information

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Description

sshd in OpenSSH 6.2 through 8.x before 8.8 when certain non-default configurations are used allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process if the configuration specifies running the command as a different user.

CVSS Vector

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

Reference

https://www.openwall.com/lists/oss-security/2021/09/26/1 https://www.openssh.com/txt/release-8.8 https://www.openssh.com/security.html https://bugzilla.suse.com/show_bug.cgi?id=1190975 https://lists.fedoraproject.org/archives/list/[email protected]/message/6XJIONMHMKZDTMH6BQR5TNLF2WDCGWED/ https://lists.fedoraproject.org/archives/list/[email protected]/message/W44V2PFQH5YLRN6ZJTVRKAD7CU6CYYET/ https://security.netapp.com/advisory/ntap-20211014-0004/ https://lists.fedoraproject.org/archives/list/[email protected]/message/KVI7RWM2JLNMWTOFK6BDUSGNOIPZYPUT/ https://www.oracle.com/security-alerts/cpuapr2022.html

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.0