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CVE-2021-41617

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Date: September 26, 2021

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.

Language: C

Severity Score

Related Resources (23)

https://security.netapp.com/advisory/ntap-20211014-0004/
https://bugzilla.suse.com/show_bug.cgi?id=1190975
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6XJIONMHMKZDTMH6BQR5TNLF2WDCGWED/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W44V2PFQH5YLRN6ZJTVRKAD7CU6CYYET/
https://nvd.nist.gov/vuln/detail/CVE-2021-41617
https://access.redhat.com/security/cve/CVE-2021-41617
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-41617
https://www.debian.org/security/2023/dsa-5586
https://security-tracker.debian.org/tracker/CVE-2021-41617
https://www.tenable.com/plugins/nessus/154174
https://security.alpinelinux.org/vuln/CVE-2021-41617
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XJIONMHMKZDTMH6BQR5TNLF2WDCGWED/
https://www.openssh.com/security.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KVI7RWM2JLNMWTOFK6BDUSGNOIPZYPUT/
https://lists.debian.org/debian-lts-announce/2023/12/msg00017.html
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.openwall.com/lists/oss-security/2021/09/26/1
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W44V2PFQH5YLRN6ZJTVRKAD7CU6CYYET/
https://www.oracle.com/security-alerts/cpujul2022.html
https://www.starwindsoftware.com/security/sw-20220805-0001/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KVI7RWM2JLNMWTOFK6BDUSGNOIPZYPUT/
https://www.openssh.com/txt/release-8.8
https://www.mend.io/vulnerability-database/CVE-2021-41617

Severity Score

Weakness Type (CWE)

Improper Privilege Management

CWE-269

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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