CVE-2020-15702
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.5% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.5% in the next 30 days (EPSS).
- Severity: 7.0 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.5% · EPSS, next 30 days
- Weakness
- CWE-367
- Record status
- Modified
Affected
- Canonical Apport 2.20.11-0ubuntu8
- Canonical Apport 2.20.11-0ubuntu9
- Canonical Apport 2.20.11-0ubuntu10
- Canonical Apport 2.20.11-0ubuntu11
- Canonical Apport 2.20.11-0ubuntu12
- Canonical Apport 2.20.11-0ubuntu13
- Canonical Apport 2.20.11-0ubuntu14
- Canonical Apport 2.20.11-0ubuntu15
Attack profile CVSS 3.1 · 7.0
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2020-15702.md and follow it. Check whether this project is affected by CVE-2020-15702. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://usn.ubuntu.com/4449-1
- https://usn.ubuntu.com/4449-1/
- https://usn.ubuntu.com/4449-2/
- https://usn.ubuntu.com/4449-1
- https://usn.ubuntu.com/4449-1/
- https://usn.ubuntu.com/4449-2/
References
- 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/