issetugid() + rsh + libmalloc OS X Local Root Exploit

The default root-suid binary /usr/bin/rsh on Mac OS X uses execv in an insecure manner. /usr/bin/rsh will invoke /usr/bin/rlogin if launched with only a host argument, without dropping privileges or clearing the environment. This exploit will pass "MallocLogFile" to /usr/bin/rsh, which is then...

CVE-2005-2748

The malloc function in the libSystem library in Apple Mac OS X 10.3.9 and 10.4.2 allows local users to overwrite arbitrary files by setting the MallocLogFile environment variable to the target file before running a setuid application...

CVE-2005-2748

The CVE-2005-2748 issue affects Apple Mac OS X 10.3.9 and 10.4.2, where the malloc function in libSystem can be manipulated via the MallocLogFile environment variable before running a setuid application. This allows local users to overwrite arbitrary files. Root cause: environment-controlled log ...

CVE-2005-2748: Undefined Security Weakness

The malloc function in the libSystem library in Apple Mac OS X 10.3.9 and 10.4.2 allows local users to overwrite arbitrary files by setting the MallocLogFile environment variable to the target file before running a setuid application...

MacOS X malloc() privilege escalation

With MallocLogFile it's possible to overwrite any system file with application which uses malloc function...