CVE-2020-15702

TOCTOU in apport

Published Aug 6, 2020 CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Description
TOCTOU Race Condition vulnerability in apport allows a local attacker to escalate privileges and execute arbitrary code. An attacker may exit the crashed process and exploit PID recycling to spawn a root process with the same PID as the crashed process, which can then be used to escalate privileges. Fixed in 2.20.1-0ubuntu2.24, 2.20.9 versions prior to 2.20.9-0ubuntu7.16 and 2.20.11 versions prior to 2.20.11-0ubuntu27.6. Was ZDI-CAN-11234.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2020-7689 TOCTOU Race Condition vulnerability in apport allows a local attacker to escalate privileges and execute arbitrary code. An attacker may exit the crashed process and exploit PID recycling to spawn a root process with the same PID as the crashed process, which can then be used to escalate privileges. Fixed in 2.20.1-0ubuntu2.24, 2.20.9 versions prior to 2.20.9-0ubuntu7.16 and 2.20.11 versions prior to 2.20.11-0ubuntu27.6. Was ZDI-CAN-11234.
Ubuntu USN Ubuntu USN USN-4449-1 Apport vulnerabilities
Ubuntu USN Ubuntu USN USN-4449-2 Apport vulnerabilities
Weaknesses

Sources

Status
PUBLISHED
Assigner
canonical
Published
Updated
Nov 3, 2025, 7:25 PM
Reserved
Jul 14, 2020, 12:00 AM
Status
Modified
Published
Aug 6, 2020, 11:15 PM
Modified
Jun 17, 2026, 2:57 AM