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freebsdFreeBSD2A1B931F-2B86-11EC-8ACD-C80AA9043978
HistorySep 26, 2021 - 12:00 a.m.

OpenSSH -- OpenSSH 6.2 through 8.7 failed to correctly initialise supplemental groups when executing an AuthorizedKeysCommand or AuthorizedPrincipalsCommand

2021-09-2600:00:00
vuxml.freebsd.org
34

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

4.4 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:M/Au:N/C:P/I:P/A:P

OpenBSD Project reports:

	sshd(8) from OpenSSH 6.2 through 8.7 failed to correctly initialise
	supplemental groups when executing an AuthorizedKeysCommand or
	AuthorizedPrincipalsCommand, where a AuthorizedKeysCommandUser or
	AuthorizedPrincipalsCommandUser directive has been set to run the
	command as a different user. Instead these commands would inherit
	the groups that sshd(8) was started with.
    

	Depending on system configuration, inherited groups may allow
	AuthorizedKeysCommand/AuthorizedPrincipalsCommand helper programs to
	gain unintended privilege.
    

	Neither AuthorizedKeysCommand nor AuthorizedPrincipalsCommand are
	enabled by default in sshd_config(5).

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

4.4 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:M/Au:N/C:P/I:P/A:P

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