Glibc Pointer guarding weakness
Hector Marco-Gisbert <[email protected]>
| Newsgroups | gmane.comp.security.fulldisclosure,gmane.comp.security.news.securitytracker,gmane.comp.security.bugtraq |
|---|---|
| Message-ID | <[email protected]> |
Hello, A weakness in the dynamic loader have been found, Glibc prior to 2.22.90 are affected. The issue is that the LD_POINTER_GUARD in the environment is not sanitized allowing local attackers easily to bypass the pointer guarding protection on set-user-ID and set-group-ID programs. Details and PoC at: http://hmarco.org/bugs/glibc_ptr_mangle_weakness.html A patch is already sent to Glibc maintainers. This issue is similar to http://hmarco.org/bugs/CVE-2013-4788.html but now affect to dynamic linked applications. -- Hector Marco-Gisbert @ http://hmarco.org/ Cyber Security Researcher @ http://cybersecurity.upv.es Universitat Politècnica de València (Spain) _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/