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.
Published: 2020-04-27
Score: 2.8 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2019-6713 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.
Ubuntu USN Ubuntu USN USN-4171-1 Apport vulnerabilities
Ubuntu USN Ubuntu USN USN-4171-2 Apport vulnerabilities
History

Mon, 03 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Subscriptions

Apport Project Apport
Canonical Ubuntu Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2025-11-03T19:25:26.757Z

Reserved: 2019-08-29T00:00:00.000Z

Link: CVE-2019-15790

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-04-28T00:15:12.913

Modified: 2025-11-03T20:15:42.550

Link: CVE-2019-15790

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses