cve/2019/CVE-2019-15790.md

### [CVE-2019-15790](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15790)
![](https://img.shields.io/static/v1?label=Product&message=Apport&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=2.14.1%3C%202.14.1-0ubuntu3.29%2Besm3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-250%20Execution%20with%20Unnecessary%20Privileges&color=brighgreen)

### Description

Apport reads and writes information on a crashed process to /proc/pid with elevated privileges. Apport then determines which user the crashed process belongs to by reading /proc/pid through get_pid_info() in data/apport. An unprivileged user could exploit this to read information about a privileged running process by exploiting PID recycling. This information could then be used to obtain ASLR offsets for a process with an existing memory corruption vulnerability. The initial fix introduced regressions in the Python Apport library due to a missing argument in Report.add_proc_environ in apport/report.py. It also caused an autopkgtest failure when reading /proc/pid and with Python 2 compatibility by reading /proc maps. The initial and subsequent regression fixes are in 2.20.11-0ubuntu16, 2.20.11-0ubuntu8.6, 2.20.9-0ubuntu7.12, 2.20.1-0ubuntu2.22 and 2.14.1-0ubuntu3.29+esm3.

### POC

#### Reference
- http://packetstormsecurity.com/files/172858/Ubuntu-Apport-Whoopsie-DoS-Integer-Overflow.html
- https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1839795

#### Github
- https://github.com/ARPSyndicate/cvemon