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ABRT sosreport Privilege Escalation

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ABRT sosreport Privilege Escalation

Disclosed
11/23/2015
Created
09/24/2019

Description

This module attempts to gain root privileges on RHEL systems with a vulnerable version of Automatic Bug Reporting Tool (ABRT) configured as the crash handler. `sosreport` uses an insecure temporary directory, allowing local users to write to arbitrary files (CVE-2015-5287). This module uses a symlink attack on `/var/tmp/abrt/cc-*$pid/` to overwrite the `modprobe` path in `/proc/sys/kernel/modprobe`, resulting in root privileges. Waiting for `sosreport` could take a few minutes. This module has been tested successfully on: abrt 2.1.11-12.el7 on RHEL 7.0 x86_64; and abrt 2.1.11-19.el7 on RHEL 7.1 x86_64.

Author(s)

  • rebel
  • bcoles <bcoles@gmail.com>

Platform

Linux

Architectures

x86, x64, armle, aarch64, ppc, mipsle, mipsbe

Development

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/linux/local/abrt_sosreport_priv_esc
msf exploit(abrt_sosreport_priv_esc) > show targets
    ...targets...
msf exploit(abrt_sosreport_priv_esc) > set TARGET < target-id >
msf exploit(abrt_sosreport_priv_esc) > show options
    ...show and set options...
msf exploit(abrt_sosreport_priv_esc) > exploit

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