glibc contains a vulnerability that allows specially crafted LD_LIBRARY_PATH values to manipulate the heap/stack, causing them to alias, potentially resulting in arbitrary code execution. Please note that additional hardening changes have been made to glibc to prevent manipulation of stack and heap memory but these issues are not directly exploitable, as such they have not been given a CVE. This affects glibc 2.25 and earlier.
https://www.suse.com/support/kb/doc/?id=7020973
https://www.suse.com/security/cve/CVE-2017-1000366/
https://www.exploit-db.com/exploits/42276/
https://www.exploit-db.com/exploits/42275/
https://www.exploit-db.com/exploits/42274/
https://security.gentoo.org/glsa/201706-19
https://seclists.org/bugtraq/2019/Sep/7
https://kc.mcafee.com/corporate/index?page=content&id=SB10205
https://access.redhat.com/security/cve/CVE-2017-1000366
https://access.redhat.com/errata/RHSA-2017:1712
https://access.redhat.com/errata/RHSA-2017:1567
https://access.redhat.com/errata/RHSA-2017:1481
https://access.redhat.com/errata/RHSA-2017:1480
https://access.redhat.com/errata/RHSA-2017:1479
http://www.securitytracker.com/id/1038712
http://www.securityfocus.com/bid/99127
http://www.debian.org/security/2017/dsa-3887