module

Apple OS X DYLD_PRINT_TO_FILE Privilege Escalation

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Disclosed
2015-07-21
Created
2018-05-30

Description

In Apple OS X 10.10.4 and prior, the DYLD_PRINT_TO_FILE environment
variable is used for redirecting logging data to a file instead of
stderr. Due to a design error, this feature can be abused by a local
attacker to write arbitrary files as root via restricted, SUID-root
binaries.

Authors

Stefan Esser
joev joev@metasploit.com

Platform

OSX

Architectures

x64

References

Module Options

To display the available options, load the module within the Metasploit console and run the commands ‘show options’ or ‘show advanced’:


    msf > use exploit/osx/local/dyld_print_to_file_root
    msf exploit(dyld_print_to_file_root) > show targets
        ...targets...
    msf exploit(dyld_print_to_file_root) > set TARGET < target-id >
    msf exploit(dyld_print_to_file_root) > show options
        ...show and set options...
    msf exploit(dyld_print_to_file_root) > exploit
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