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Amazon Linux AMI: CVE-2017-5551: Security patch for kernel (ALAS-2017-805)

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Amazon Linux AMI: CVE-2017-5551: Security patch for kernel (ALAS-2017-805)

Severity
4
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:N)
Published
01/30/2017
Created
07/25/2018
Added
03/07/2017
Modified
02/02/2018

Description

The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097.

Solution(s)

  • amazon-linux-upgrade-kernel

References

  • amazon-linux-upgrade-kernel

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