module

ABRT sosreport Privilege Escalation

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

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.

Authors

rebel
bcoles bcoles@gmail.com

Platform

Linux

Architectures

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

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/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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