CVE-2020-15702

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.

• CWE-367
• CWE-367

• https://usn.ubuntu.com/4449-1Vendor Advisory
• https://usn.ubuntu.com/4449-1/Vendor Advisory
• https://usn.ubuntu.com/4449-2/Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-20-979/Third Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2025/Jun/9
• https://usn.ubuntu.com/4449-1Vendor Advisory
• https://usn.ubuntu.com/4449-1/Vendor Advisory
• https://usn.ubuntu.com/4449-2/Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-20-979/Third Party Advisory, VDB Entry

Published

Aug 6, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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