Information Exposure

Affecting glibc package, versions *

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Overview

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.

References

CVSS Score

3.3
low severity
  • Attack Vector
    Local
  • Attack Complexity
    Low
  • Privileges Required
    Low
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    Low
  • Integrity
    None
  • Availability
    None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVE
CVE-2019-19126
CWE
CWE-200
Snyk ID
SNYK-DEBIAN9-GLIBC-534996
Disclosed
19 Nov, 2019
Published
20 Nov, 2019