high7.0
CVE-2020-15702
TOCTOU Race Condition vulnerability in apport allows a local attacker to escalate privileges and execute arbitrary code.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Canonical | Apport | Versions 2.20.11-0ubuntu8, 2.20.11-0ubuntu9, 2.20.11-0ubuntu10, 2.20.11-0ubuntu11, 2.20.11-0ubuntu12, 2.20.11-0ubuntu13 |
| Canonical | Ubuntu Linux | Version 14.04 |
Weakness classification
References
- NVD record
- CVE.org record
- https://usn.ubuntu.com/4449-1
- https://usn.ubuntu.com/4449-1/
- https://usn.ubuntu.com/4449-2/
- https://www.zerodayinitiative.com/advisories/ZDI-20-979/
- http://seclists.org/fulldisclosure/2025/Jun/9
- https://usn.ubuntu.com/4449-1
- https://usn.ubuntu.com/4449-1/
- https://usn.ubuntu.com/4449-2/
- https://www.zerodayinitiative.com/advisories/ZDI-20-979/