Information Exposure Affecting glibc package, versions <2.29-8
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Test your applications- Snyk ID SNYK-DEBIAN11-GLIBC-534992
- published 20 Nov 2019
- disclosed 19 Nov 2019
Introduced: 19 Nov 2019
CVE-2019-19126 Open this link in a new tabHow to fix?
Upgrade Debian:11 glibc to version 2.29-8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian.
See How to fix? for Debian:11 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.
References
- https://security-tracker.debian.org/tracker/CVE-2019-19126
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4FQ5LC6JOYSOYFPRUZ4S45KL6IP3RPPZ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZFJ5E7NWOL6ROE5QVICHKIOUGCPFJVUH/
- https://sourceware.org/bugzilla/show_bug.cgi?id=25204
- https://usn.ubuntu.com/4416-1/
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-19126
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4FQ5LC6JOYSOYFPRUZ4S45KL6IP3RPPZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZFJ5E7NWOL6ROE5QVICHKIOUGCPFJVUH/