Improper Initialization Affecting glibc-devel package, versions <0:2.17-322.181.amzn1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-AMZN201803-GLIBCDEVEL-1725528
  • published27 Sept 2021
  • disclosed19 Nov 2019

Introduced: 19 Nov 2019

CVE-2019-19126  (opens in a new tab)
CWE-665  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 glibc-devel to version 0:2.17-322.181.amzn1 or higher.
This issue was patched in ALAS-2021-1511.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc-devel package and not the glibc-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

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.

CVSS Scores

version 3.1