What’s Vulnerable › Vulnerabilities

CVE-2021-41617

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-26 · updated 2026-10-14

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.

Affected products

• Fedoraproject Fedora: 33, 34, 35
• Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
• NetApp Aff 500F Firmware: all versions
• NetApp Aff A250 Firmware: all versions
• Clustered Data ONTAP: all versions
• NetApp Hci Management Node: all versions
• NetApp ONTAP Select Deploy administration utility: all versions
• NetApp Solidfire: all versions
• OpenSSH: from 6.2 before 8.8 — fixed in 8.8
• Oracle Corporation Oracle HTTP Server: 12.2.1.2.0, 12.2.1.3.0, 12.2.1.4.0
• Oracle Corporation Oracle ZFS Storage Appliance Kit: 8.8
• Starwindsoftware Starwind Virtual San: v8r13-14398

How to fix

Upgrade to a fixed version: OpenSSH 8.8. Check the vendor advisory for mitigations.

References

• https://bugzilla.suse.com/show_bug.cgi?id=1190975
• https://lists.debian.org/debian-lts-announce/2023/12/msg00017.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XJIONMHMKZDTMH6BQR5TNLF2WDCGWED/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KVI7RWM2JLNMWTOFK6BDUSGNOIPZYPUT/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W44V2PFQH5YLRN6ZJTVRKAD7CU6CYYET/
• https://security.netapp.com/advisory/ntap-20211014-0004/
• https://www.debian.org/security/2023/dsa-5586
• https://www.openssh.com/security.html
• https://www.openssh.com/txt/release-8.8
• https://www.openwall.com/lists/oss-security/2021/09/26/1
• https://www.oracle.com/security-alerts/cpuapr2022.html
• https://www.oracle.com/security-alerts/cpujul2022.html

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