CVE-2019-19126

 

Published at: - 19-11-2019 11:15

Last modified: - 17-10-2022 08:15

Total changes: - 4

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://sourceware.org/bugzilla/show_bug.cgi?id=25204
• FEDORA-2020-1a3bdfde17-Mailing List, Third Party Advisory
• FEDORA-2020-c32e4b271c-Mailing List, Third Party Advisory
• USN-4416-1-Third Party Advisory
• [debian-lts-announce] 20221017 [SECURITY] [DLA 3152-1] glibc security update-

 

Keywords

NVD

 

CVE-2019-19126

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures