CVE Vulnerability

CVE-2019-15790

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.

2.1 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

3.3 /10

CVSS v3.0 : LOW

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://usn.ubuntu.com/4171-2/ Third Party Advisory
https://usn.ubuntu.com/4171-3/ Third Party Advisory
https://usn.ubuntu.com/4171-1/ Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1851806 Exploit Issue Tracking
https://bugs.launchpad.net/apport/+bug/1854237 Issue Tracking Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1839795 Exploit Issue Tracking
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1850929 Exploit Issue Tracking
https://usn.ubuntu.com/4171-4/ Third Party Advisory
https://usn.ubuntu.com/4171-5/ Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:apport_project:apport:-:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
Information

Published : 2020-04-28 12:15

Updated : 2020-05-14 12:58

NVD link : CVE-2019-15790

Mitre link : CVE-2019-15790

Products Affected

Apport

Apport Project

CWE
CWE-269