CVE-2021-41617

HIGHCVSS 7/10EPSS 2.37%

Last modified

CVE-2021-41617 is a high-severity vulnerability rated 7/10 on the CVSS scale. 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.. EPSS estimates a 2.37% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7/10

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

EPSS Probability
2.37%

81.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersionsUpdate
OpenbsdOpenssh>= 6.2, < 8.8
FedoraprojectFedora33
FedoraprojectFedora34
FedoraprojectFedora35
NetappActive Iq Unified ManagerAll versions
NetappClustered Data OntapAll versions
NetappHci Management NodeAll versions
NetappOntap Select Deploy Administration UtilityAll versions
NetappSolidfireAll versions
NetappAff A250 FirmwareAll versions
NetappAff 500f FirmwareAll versions
OracleHttp Server12.2.1.2.0
OracleHttp Server12.2.1.3.0
OracleHttp Server12.2.1.4.0
OracleZfs Storage Appliance Kit8.8
StarwindsoftwareStarwind Virtual Sanv8r1314398

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-41617?
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.
How severe is CVE-2021-41617?
CVE-2021-41617 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 2.37% probability of exploitation in the next 30 days.
How do I fix CVE-2021-41617?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-41617?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST