Vulnerability Report

CVE-2020-15702

Title: Canonical Apport RCE

Arbitrary File Access

Proof Of Concept

No public PoC currently indexed for CVE-2020-15702.

CWE Category CWE-367
Published Date Aug 06, 2020
Modified Date Jun 17, 2026
Exploit Status Not Found
Score 7.0 CVSS v3.1
Exploit Probability (EPSS)
0.50%

Vulnerability Summary

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.

Impacted Vendors

A
apport 1
C
canonical 1

Reference Links

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/
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.0
Attack Vector
LOCAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.0
Attack Vector
LOCAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
4.4
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:M/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-15702 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.