Description
sys/openbsd/stack_protector.c in libc in Apple iOS 6.1.3 and Mac OS X 10.8.x does not properly parse the Apple strings employed in the user-space stack-cookie implementation, which allows local users to bypass cookie randomization by executing a program with a call-path beginning with the stack-guard= substring, as demonstrated by an iOS untethering attack or an attack against a setuid Mac OS X program.
References
- 1033703 vdb-entry
- http://www.syscan.org/index.php/sg/program/day/2
- https://support.apple.com/HT205212
- APPLE-SA-2015-09-30-3 vendor-advisory
- http://antid0te.com/syscan_2013/SyScan2013_Mountain_Lion_iOS_Vulnerabilities_Garage_Sale_Whitepaper.pdf
- https://support.apple.com/HT205267
- APPLE-SA-2015-09-21-1 vendor-advisory
- https://support.apple.com/HT205213
- APPLE-SA-2015-09-16-1 vendor-advisory