Vulnerability 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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Glibc | < 2.31 |
| Canonical | Ubuntu Linux | 16.04 |
| Fedoraproject | Fedora | 30 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://sourceware.org/bugzilla/show_bug.cgi?id=25204Issue TrackingPatchThird Party Advisory
- https://usn.ubuntu.com/4416-1/Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://sourceware.org/bugzilla/show_bug.cgi?id=25204Issue TrackingPatchThird Party Advisory
- https://usn.ubuntu.com/4416-1/Third Party Advisory
FAQ
What is CVE-2019-19126?
CVE-2019-19126 is a vulnerability with a CVSS score of 3.3 (LOW). 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 l...
How severe is CVE-2019-19126?
CVE-2019-19126 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-19126?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Glibc, Canonical Ubuntu Linux, Fedoraproject Fedora, Debian Debian Linux.