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Red Hat OpenShift: CVE-2019-19126: glibc: LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries

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Red Hat OpenShift: CVE-2019-19126: glibc: LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
11/19/2019
Created
12/30/2020
Added
12/29/2020
Modified
12/29/2020

Description

On the x86-64 architecture, the GNU C Library (aka glibc) before 2.31 fails to ignore the LD_PREFER_MAP_32BIT_EXEC environment variable during program execution after a security transition, allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass ASLR for a setuid program.

Solution(s)

  • linuxrpm-upgrade-redhat-coreos

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