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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: canonical
Published: 2020-04-27T23:25:19.961303Z
Updated: 2024-09-16T20:43:33.638Z
Reserved: 2019-08-29T00:00:00
Link: CVE-2019-15790
Vulnrichment
No data.
NVD
Status : Modified
Published: 2020-04-28T00:15:12.913
Modified: 2024-11-21T04:29:28.330
Link: CVE-2019-15790
Redhat
No data.