CVE-2019-19126

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.

References

https://usn.ubuntu.com/4416-1/

https://sourceware.org/bugzilla/show_bug.cgi?id=25204

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZFJ5E7NWOL6ROE5QVICHKIOUGCPFJVUH/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4FQ5LC6JOYSOYFPRUZ4S45KL6IP3RPPZ/

https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3